SACRIFICE ONE. copy the spell.

Silverquill, the Disputant is an Orzhov 4-mana Elder Dragon with flying, vigilance, and a static ability that reads: each instant and sorcery you cast has casualty 1. That ability is the whole deck. Cost him at {2}{W}{B}, swing for 4 in the air the turn he lands, and from then on every spell you cast comes with a question: is there a creature you can spare to copy this?

Casualty 1 is not a free copy. It’s an option on cast. When you cast an instant or sorcery, you may sacrifice a creature with power 1 or greater. If you do, a casualty trigger goes on the stack, and when it resolves it copies the original spell and lets you choose new targets for the copy. The copy and the original are both on the stack at that point. The copy resolves first.

The deck is built around making that sacrifice cheap. Token producers like Eager Glyphmage, Rufus Shinra, Harsh Annotation, and The Final Days give you bodies you don’t mind losing. The recursion package (Helping Hand, Zombify, Cheerful Osteomancer, Grave Researcher) loops the fuel back. The equipment kit (Colossus Hammer, Pre-War Formalwear, Dark Knight’s Greatsword) puts a clock on Silverquill himself so the deck wins through commander damage when the spell engine stalls.

You’re not comboing out. There are no infinite loops in this build. You out-pace the table on raw spell value, eat a wrath or two, recur the fuel, and end one player at a time with commander damage.

How the casualty copy is actually made

Casualty is an optional additional cost paid as the spell is cast. The full timing walks like this:

1. Silverquill is on the battlefield, untapped or tapped doesn’t matter, the ability is static.
2. You announce a cast. Pick a target for the instant or sorcery you’re casting. As you go through the cost-paying steps, you decide whether to take the casualty option.
3. If you take it, you choose a creature you control with power 1 or greater and sacrifice it as you finish paying costs. That sacrifice puts a casualty trigger on the stack on top of the spell.
4. The trigger resolves first (last-in-first-out). When it resolves, you create a copy of the spell on the stack. You may choose new targets for the copy at that moment.
5. The copy resolves first, then the original. They are now two separate spell instances on the stack, with the copy higher up. New-target windows for the copy close once the trigger resolves.

That ordering matters. Removal stacked behind your casualty fires off the copy’s targets before the original, so if an opponent is going to kill your target in response, your copy on a different target still resolves. Reversed example: if someone counters the original, your copy is unaffected because copies are spells but they aren’t cast. Counterspells targeting cast-only effects miss the copy.

The static ability gives every spell casualty 1 regardless of cost, color, or target restriction. Even a {W} cantrip can be copied if you have a body to feed it.

Premium sac targets

Casualty fuel ranks by what you’re paying versus what you gain. A Servo or Inkling token (raw 1/1) costs effectively nothing. Silverquill himself is a terrible sac target. A growing Honormancer is somewhere in between. Aim to spend the cheapest body that’s legal.

Tier 1 (always sac if possible):

• A 1/1 Inkling from Eager Glyphmage, Harsh Annotation, or a token producer.
• A Servo from Hidden Stockpile (swap-in).
• A Darkstar token from Rufus Shinra.
• A Horror token from The Final Days.

Tier 2 (sac if the spell is high-value):

• Honorbound Page, Stirring Hopesinger, or another small body that’s already chip-damaged or off-engine.

Tier 3 (only sac for game-winning copies):

• Stirring Honormancer (4/5 with ETB self-mill, worth keeping on the board for blocks).
• A creature wearing equipment (you lose the suit-up).
• Judge Magister Gabranth (he grows off other deaths, not his own).

Premium spells to spend the fuel on, ranked:

• Harsh Annotation. {1}{W}, kill plus give them a 1/1 Inkling. Copied: two creatures dead, two Inklings given to opponents. The Inkling gift is a real cost (flying chump tokens for the table) but two kills off one card at four total mana is hard to beat.
• Sephiroth’s Intervention. {3}{B} kill plus 2 life. Copied: two kills, 4 life, one of the cleanest copies in the deck.
• Zombify. {3}{B} returns any creature, copied returns two. The Casualty doubles the reanimation suite into your best two cards in the yard.
• Helping Hand. {W} returns a MV3-or-less creature tapped. Copied with a sac, you bring back two cheap bodies for 1 mana plus a body. (Note: cannot recur Silverquill at MV4.)
• Pull from the Grave. {2}{B} returns up to two creature cards to hand. Copied: four cards back to hand, refills the recursion engine after a wrath.
• Foolish Fate. {2}{B} kill plus infusion drain for 3 if you gained life. Sac-and-copy is two kills plus, often, two drains.
• Daydream. {W} exiles your own creature and brings it back with a +1/+1 counter. Sac-and-copy bounces and re-counters two of your creatures. Use it on creatures with juicy ETBs (Glyphmage makes another Inkling, Imperious Inkmage surveils 2 again).
• Render Speechless. {2}{W}{B} put two +1/+1 counters on a creature plus targeted discard. Copied: counters on two creatures, two discards.
• The Final Days. {2}{B}{B} makes two 2/2 Horror tokens, four if you sac into copy. Flashback turns it into X tokens off your yard count, huge late.
• Killian’s Confidence. {1}{W} +2/+0 and draw a card. Copied: two creatures pumped, two cards drawn.

Single-target removal in the deck reads as a 2-for-1 the second you have a body to spare. Hold the cast until the second target is on the table unless the one threat kills you next turn.

A note on cards that don’t love the copy:

• Erode lets the destroyed creature’s controller search for a basic land. Copied, you ramp two opponents. Cast it only when the kill is worth the gift.
• Dissection Practice is a -1/-1 modal that mostly clears a chump blocker. The copy is rarely worth a body unless you need to clear two blockers for lethal.
• Vincent’s Limit Break and You’re Not Alone are combat tricks. They’re worth a copy mid-attack only if the second target is also attacking.
• Resentful Revelation is top-3 dig (1 to hand, 2 to yard), not removal. Copy it only when you need both the dig and the yard fuel; otherwise let it resolve flat.

Snap keep

• Two or three lands, at least one white source for Silverquill, one black source for the recursion line.
• A cheap creature you don’t mind sacrificing. Honorbound Page, Eager Glyphmage, or a token producer counts.
• Silverquill in hand with a T4 mana plan, OR a way to dig (Diary of Dreams, Brass Infiniscope, Primary Research, Owlin Historian).
• One instant or sorcery you’d cast on T5. First casualty trigger lands the same turn or the turn after Silverquill resolves.
• Pre-War Formalwear or Dark Knight’s Greatsword for the kill plan. Equipment in the opener is fine if you also have a small body to wear it.

Ship back

• Five-plus lands, no payoffs. Mana with nothing to spend it on.
• No lands, two-plus Plains but no Swamp (or vice versa). Silverquill is {2}{W}{B}, and both colors need to be live by T3.
• All spells, no creatures. Silverquill arrives on T4 with nothing to sac. Casualty is dead text without bodies.
• Colossus Hammer with nothing to equip. Eight equip mana on a vanilla turn is not a plan.
• Reanimation spells with an empty yard and no surveil. Dead cards. Mulligan unless Brass Infiniscope or Forum of Amity is in the hand to fill the yard.
• Only Tier 3 single-target removal with no sac fuel. You’ll trade 1-for-1 for ten turns and lose.

Solo-strike line. Squall, SeeD Mercenary’s Rough Divide gives any creature attacking ALONE double strike for the turn. Swing Silverquill suited up (9/6 flying vigilance) WITHOUT any other attackers, get double strike for the turn, deal 18 commander damage in one swing. Kills a player in one attack from a 21-life starting point if they take 18 in one hit.

The Hammer line is the backup when Silverquill keeps eating removal. The Hammer strips his flying, so put it on a different body, not on him.

1. Spirit Mantle. {1}{W}, +1/+1 and protection from creatures. The single best protection card in the deck. Blanks combat damage, creature-source removal, and most equipment from opponents. Stick it on Silverquill the turn after he lands.
2. Masterful Flourish. {B}, instant-speed +1/+0 and indestructible until end of turn. Stops Murder, Doom Blade, damage-based wraths. Does not stop exile. Sac-and-copy it for two creatures protected, or save it cheap and instant for a clutch save.
3. Pre-War Formalwear. +2/+2 and vigilance. Pushes Silverquill to 6/6, which raises the floor on burn and combat damage even though it doesn’t stop targeted removal.
4. Killian, Decisive Mentor. Aura payoff that goads on enchantment-enter and draws cards off Aura-attached attackers. Pair with Spirit Mantle so Silverquill is both protected and drawing cards on his swings.
5. Zombify or recursion. If Silverquill dies, Zombify him back rather than recasting from the command zone. You sidestep commander tax, and casualty comes back online a turn earlier.

Commander tax on Silverquill goes 0, then 2, then 4. After one death he costs {4}{W}{B} (6 mana for a 4/4). After two deaths it’s {6}{W}{B}, which is the budget for an entire turn. Reanimation sidesteps the tax curve, which is why Zombify and Cheerful Osteomancer earn their slots.

If you’re sleeving up before a session, throw these in the deckbox:

• Inkling tokens 1/1 white-and-black flying (Strixhaven art). Bring 8. Harsh Annotation, Eager Glyphmage, and the casual gift on Harsh Annotation copies all want these.
• Soldier tokens 1/1 white. Bring 4 for any printing that needs them.
• Servo tokens 1/1 colorless. Bring 6 for the Hidden Stockpile swap-in.
• Spirit tokens 1/1 white flying. Bring 4 as filler.
• Darkstar tokens legendary 2/2 white-and-black Dog (Rufus Shinra). Bring 1.
• Horror tokens 2/2 black (The Final Days). Bring 10. Flashback The Final Days from a stocked yard can make 8 or more in one cast.
• Hero tokens 1/1 colorless (Pre-War Formalwear, Dark Knight’s Greatsword, Paladin’s Arms job-select). Bring 3.
• +1/+1 counters, dice or glass beads. Render Speechless and Abigale’s adventure put counters on creatures across turns. Bring extra.