Discard is supposed to be the cost. This deck makes it the payoff.
Format: Standard (MTG Arena) · Colors: Mardu (W/B/R) · Meta share: ~4.7% (#6 archetype) · Archetype: Aggro-combo
Overview
Most decks treat discarding a card as a tax you pay to get something better. Mardu Discard treats it as the engine itself. Every card you pitch is a trigger, and the deck is stacked with permanents that all read some version of “whenever you discard, something good happens.”
The result is a one- and two-drop aggro deck that plays like a combo deck by turn three. Marauding Mako gets bigger. Inti puts counters on your attackers and exiles free cards off the top. Cool but Rude drains three life across two triggers. Hardened Academic picks up counters and lifelink. And because Bloodghast comes back every time a land enters, the “cost” of discarding is frequently zero.
The deck’s ceiling is a turn-four kill out of nowhere. Its floor is a wide, resilient board that grinds through removal because half of it recurs from the graveyard. That combination is why it sits comfortably in the top six of the format while the Mono-Green Landfall and Izzet Spellementals decks above it soak up all the hate.
Why play it this week: the format’s two biggest decks (Mono-Green Landfall at 18.4%, Izzet Spellementals at 12.2%) are both built to interact on the stack or on the ground one-for-one. Mardu Discard sidesteps that by generating multiple bodies and multiple triggers from single cards, and by putting damage on the board that doesn’t care whether the creature survives.
The Decklist
Creatures (27)
| Qty | Card | Cost | Role |
|---|---|---|---|
| 4 | Marauding Mako | {R} | One-drop that grows with every discard; cycles when you don’t need it |
| 4 | Moonshadow | {B} | 7/7 menace for one mana that sheds -1/-1 counters as permanents hit your yard |
| 4 | Iron-Shield Elf | {1}{B} | 3/1 free discard outlet with built-in indestructible |
| 4 | Bloodghast | {B}{B} | Recurs on landfall — the perfect card to throw away |
| 4 | Hardened Academic | {R}{W} | 2/1 flying haste; discard for lifelink, counters when cards leave the yard |
| 2 | Inti, Seneschal of the Sun | {1}{R} | Attack trigger: discard for a counter, trample, and a free card |
| 2 | Tersa Lightshatter | {2}{R} | Hasty 3/3 that loots two and replays exiled cards at seven cards in yard |
| 2 | Casey Jones, Vigilante | {1}{R}{R} | Draw three now, discard three at random later — three free triggers |
| 1 | Carnage, Crimson Chaos | {2}{B}{R} | 4/3 trample; reanimates a 3-drop for a suicide attack. Mayhem {B}{R} |
Enchantments (4) · Instants (4) · Sorceries (3)
| Qty | Card | Cost | Role |
|---|---|---|---|
| 4 | Cool but Rude | {1}{R} | Class. Level 1 loots on attack; Level 2 drains 2 per discard |
| 2 | Requiting Hex | {B} | Kills a 2-drop; blight 1 to also gain 2 life |
| 2 | Erode | {W} | One-mana unconditional creature/planeswalker removal |
| 3 | Practiced Offense | {2}{W} | Team-wide +1/+1 counters plus double strike or lifelink — and it flashes back |
Lands (22)
| 4 | Sacred Foundry | 3 | Concealed Courtyard |
| 4 | Blood Crypt | 2 | Inspiring Vantage |
| 4 | Starting Town | 1 | Mountain |
| 3 | Godless Shrine | 1 | Swamp |
Sideboard (15)
| Qty | Card | Bring in against |
|---|---|---|
| 3 | Voice of Victory | Control, Izzet Spellementals — shuts off instant-speed interaction |
| 3 | Strategic Betrayal | Mono-Green Landfall, Sultai Reanimator — exiles a threat and the yard |
| 2 | Monument to Endurance | Grindy midrange mirrors — turns every discard into reach |
| 2 | Requisition Raid | Artifact/enchantment decks; modal +1/+1 counters otherwise |
| 2 | Duress | Control, combo, sweeper decks |
| 1 | Slagstorm | Boros Tokens, Mono-Green go-wide starts |
| 1 | Shoot the Sheriff | Clean answer to a non-outlaw bomb |
| 1 | Deathmark | Selesnya Landfall, Lifegain, white-based aggro |
Arena Import (paste-ready)
Copy the block below straight into MTG Arena → Decks → Import.
4 Bloodghast 1 Carnage, Crimson Chaos 2 Casey Jones, Vigilante 4 Cool but Rude 2 Erode 4 Hardened Academic 2 Inti, Seneschal of the Sun 4 Iron-Shield Elf 4 Marauding Mako 4 Moonshadow 3 Practiced Offense 2 Requiting Hex 2 Tersa Lightshatter 4 Sacred Foundry 4 Blood Crypt 4 Starting Town 3 Godless Shrine 3 Concealed Courtyard 2 Inspiring Vantage 1 Mountain 1 Swamp 1 Deathmark 2 Duress 2 Monument to Endurance 2 Requisition Raid 1 Shoot the Sheriff 1 Slagstorm 3 Strategic Betrayal 3 Voice of Victory
Strategy Guide
Early game (turns 1–2)
Your one-drops are not filler — they are the whole plan. Marauding Mako on turn one is the single best opening the deck has, because every discard for the rest of the game makes it bigger and nothing in the format profitably blocks a 4/4 shark on turn three.
Moonshadow is the other premium turn-one play, and it is the card new pilots misplay most. It enters as a 7/7 with six -1/-1 counters, so it’s a 1/1 menace on arrival. Every time one or more permanent cards go to your graveyard, you remove a counter. Bloodghast dying, a land getting discarded, a Cool but Rude pitched to its own trigger — all of it grows Moonshadow. It commonly attacks as a 3/3 or 4/4 menace on turn three and a 6/6 on turn four.
Turn two is where the deck picks its lane. Iron-Shield Elf is your free repeatable discard outlet and a 3/1 body that dodges removal. Cool but Rude is the slower, higher-ceiling play: land it turn two, level it turn three, and every subsequent discard drains two. Hardened Academic is the aggressive line — a 2/1 flier with haste that starts pressuring immediately.
Mulligan guidance: you want two lands and at least one one-drop. Hands with three-plus lands and no early creature are traps; this deck does not have the top end to win a long game on card quality alone. Keep aggressively — a five-card hand with Mako and a land beats a seven-card hand of four-drops.
Mid game (turns 3–4)
This is the turn range where the deck wins. The core sequence is: attack, trigger Inti or Cool but Rude, discard Bloodghast, then play your land for the turn to bring Bloodghast straight back to the battlefield. You paid nothing, you got a +1/+1 counter and trample from Inti, you drained two from Cool but Rude at Level 2, you grew Marauding Mako, and you removed a counter from Moonshadow. One discard, five points of value.
Tersa Lightshatter arrives with haste and immediately loots two, which is two more triggers. If your graveyard has seven cards when she attacks — a bar this deck clears routinely by turn four — you exile a random card and can cast it that turn. That’s a free spell attached to a 3/3 hasty attacker.
Practiced Offense is the turn-four finisher. It puts a counter on every creature you control and gives one of them double strike. On a board of Mako, Moonshadow, and a recurred Bloodghast, that is frequently lethal from a life total the opponent thought was safe. And when it isn’t lethal, it flashes back for {1}{W} to do it again.
Late game (turn 5+)
You are not built to go long, but you are built to recover. Bloodghast comes back every land drop. Practiced Offense comes back once from the graveyard. Cool but Rude at Level 3 tutors any card in your deck. Hardened Academic gains lifelink on demand, which matters more than it looks against Mono-Green Landfall’s oversized attackers.
Carnage, Crimson Chaos is your one-of haymaker. He reanimates a three-drop from your graveyard — usually Tersa Lightshatter or Casey Jones — for one suicidal attack, which is exactly what you want when you need four extra damage and don’t care about the body afterward. His Mayhem cost of {B}{R} means he can also be cast from exile after Tersa’s attack trigger flips him up.
Win Conditions and Combos
The core loop: Bloodghast + any discard outlet + a land drop. Discard Bloodghast, play a land, get Bloodghast back. Free trigger every single turn. With Cool but Rude at Level 2 that’s two damage a turn from nothing. With Monument to Endurance out of the sideboard it’s three life plus a card or a Treasure.
Cool but Rude, Level 2 + Casey Jones, Vigilante. Casey draws three immediately, then discards three at random on your next upkeep. Those three random discards each trigger Cool but Rude for two damage — six damage from a card that already drew you three. If Marauding Mako is on board, it also picks up three counters. This is the deck’s most explosive non-combat kill.
Inti + trample math. Inti’s attack trigger gives a counter and trample, which means Moonshadow at 6/6 menace with trample is essentially unblockable damage. Two blockers can’t stop it, and whatever gets through goes to the face.
Tersa Lightshatter into a free spell. Seven cards in the yard is the threshold. At that point every Tersa attack is a random free card — sometimes a land, often a Practiced Offense that closes the game.
Practiced Offense as reach. Double strike on a Moonshadow that has shed most of its counters is the classic “how did I die from 12” line. Count your opponent’s life total before you cast it — the flashback means you get two swings at this.
Sideboard Guide
vs. Mono-Green Landfall (18.4% of the meta)
In: 3 Strategic Betrayal, 1 Deathmark, 1 Slagstorm — Out: 2 Erode, 1 Carnage, 1 Casey Jones, 1 Requiting Hex
Their creatures get too big to fight profitably, so stop trying. Strategic Betrayal exiles their best threat and blanks any recursion. Race instead of trading — you have haste and evasion, they mostly have raw stats. Hardened Academic’s lifelink discard is your best defensive tool.
vs. Izzet Spellementals (12.2%)
In: 3 Voice of Victory, 2 Duress — Out: 2 Erode, 2 Requiting Hex, 1 Carnage
Voice of Victory is the card. “Your opponents can’t cast spells during your turn” turns off every counterspell and every instant-speed removal spell during your attack step, and it mobilizes for two extra bodies. Duress strips their sweeper before you commit. Do not overextend into a board wipe — you only need two threats to close.
vs. Dimir Midrange (10.8%)
In: 2 Monument to Endurance, 3 Strategic Betrayal — Out: 3 Practiced Offense, 2 Erode
They will trade one-for-one with you all day, so shift toward inevitability. Monument to Endurance converts your discard engine into a clock they can’t remove by killing creatures. Strategic Betrayal handles their graveyard value plans.
vs. Lifegain / Orzhov (4.0%)
In: 2 Monument to Endurance, 1 Deathmark, 2 Duress — Out: 2 Requiting Hex, 2 Erode, 1 Moonshadow
Combat damage alone won’t get there against a deck gaining eight a turn. Monument’s “each opponent loses 3 life” mode ignores lifegain math entirely and is your primary win condition post-board.
vs. Boros Tokens / go-wide decks
In: 1 Slagstorm, 2 Requisition Raid, 3 Voice of Victory — Out: 2 Erode, 2 Requiting Hex, 1 Carnage, 1 Casey Jones
Slagstorm is one-sided more often than you’d think — Moonshadow survives at high counter counts and Iron-Shield Elf can go indestructible for free in response.
Budget Notes
Premium build estimate: roughly $180–$220 in paper, and the cost is almost entirely the mana base. Sacred Foundry, Blood Crypt, and Godless Shrine account for well over half the deck’s price. On Arena the deck is cheap — the rares are concentrated in lands you likely already own, and the spell base leans common and uncommon.
Functional budget swaps that keep the engine intact:
- Shocklands → Starting Town + painlands. Cut 2 Godless Shrine and 2 Blood Crypt for 2 more Starting Town and 2 additional painlands or basics. You lose a little speed on three-color turns; you keep every payoff.
- Carnage, Crimson Chaos → a 4th Tersa Lightshatter or 3rd Inti. The one-of haymaker is the most cuttable card in the deck. Another Tersa is more consistent and cheaper.
- Casey Jones, Vigilante → 2 more Iron-Shield Elf. You trade explosiveness for consistency and a much lower price tag. The Elf is a free discard outlet, which the deck genuinely wants more of.
- Practiced Offense → any budget pump, or cut white entirely. A straight Rakdos build runs 4 more Iron-Shield Elf and 3 Monument to Endurance maindeck on a two-color mana base of basics and Blood Crypt.
- Monument to Endurance (sideboard) → Duress. If you can’t afford the artifact, more discard-based disruption gets you most of the way against control.
The straight Rakdos version costs under $80 and loses maybe three percentage points of win rate. The engine — Mako, Moonshadow, Bloodghast, Cool but Rude, Inti, Tersa — is all still there.
The Bottom Line
Mardu Discard is the best-positioned deck in Standard that nobody is preparing for. It punishes a metagame built to answer single big threats by presenting eight small ones that all feed each other, and it gets to do it on a budget-friendly Arena build. If you want a deck that rewards knowing your sequencing cold, this is the one to pick up this week.
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