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Rules guide · Legendary Creature

X-23, Deadly WeaponHow it works & interactions with other cards

By the ManaCount desk· 4 min read· Marvel Super Heroes Commander· June 26, 2026
Carte Magic X-23, Deadly Weapon

X-23, Deadly Weapon is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.

01

Official card text

Whenever another Mutant you control enters, put a +1/+1 counter on that creature and a +1/+1 counter on X-23.

How it works : X-23, Deadly Weapon

Original English text — Wizards of the Coast / Scryfall

No additional ruling has been published for this card.

02

Popular combos

Real combos played by the community, sorted by popularity.

Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight
+X-23, Deadly Weapon
+Umbral Collar Zealot
#1

Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight + X-23, Deadly Weapon + Umbral Collar Zealot

Infinite +1/+1 counters on a creatureInfinite creature ETBInfinite creature LTBInfinite death triggers
  1. 1Activate Umbral Collar Zealot by sacrificing the other Mutant.
  2. 2When the Mutant dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
  3. 3When the Mutant enters, X-23 triggers, putting a +1/+1 counter on X-23 and the other Mutant.
  4. 4Resolve the Umbral Collar Zealot ability.
  5. 5Repeat.
Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight
+X-23, Deadly Weapon
+Altar of Dementia
#2

Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight + X-23, Deadly Weapon + Altar of Dementia

Infinite +1/+1 counters on a creatureInfinite creature ETBInfinite creature LTBInfinite death triggers
  1. 1Activate Altar of Dementia by sacrificing the other Mutant.
  2. 2When the Mutant dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
  3. 3When the Mutant enters, X-23 triggers, putting a +1/+1 counter on X-23 and the other Mutant.
  4. 4Resolve the Altar of Dementia ability.
  5. 5Repeat.
Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight
+X-23, Deadly Weapon
+Phantom Train
#3

Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight + X-23, Deadly Weapon + Phantom Train

Infinite +1/+1 counters on a creatureInfinite creature ETBInfinite creature LTBInfinite death triggers
  1. 1Activate Phantom Train by sacrificing the other Mutant.
  2. 2When the Mutant dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
  3. 3When the Mutant enters, X-23 triggers, putting a +1/+1 counter on X-23 and the other Mutant.
  4. 4Resolve the Phantom Train ability.
  5. 5Repeat.
Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight
+X-23, Deadly Weapon
+Ashnod's Altar
#4

Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight + X-23, Deadly Weapon + Ashnod's Altar

Infinite creature ETBInfinite creature LTBInfinite colorless manaInfinite death triggers
  1. 1Activate Ashnod's Altar by sacrificing the other Mutant.
  2. 2When the Mutant dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
  3. 3When the Mutant enters, X-23 triggers, putting a +1/+1 counter on X-23 and the other Mutant.
  4. 4Repeat.
Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight
+X-23, Deadly Weapon
+Yahenni, Undying Partisan
#5

Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight + X-23, Deadly Weapon + Yahenni, Undying Partisan

Infinite +1/+1 counters on a creatureInfinite creature ETBInfinite creature LTBInfinite death triggers
  1. 1Activate Yahenni by sacrificing the other Mutant.
  2. 2When the Mutant dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
  3. 3When the Mutant enters, X-23 triggers, putting a +1/+1 counter on X-23 and the other Mutant.
  4. 4Resolve the Yahenni ability.
  5. 5Repeat.
Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight
+X-23, Deadly Weapon
+Bloodflow Connoisseur
#6

Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight + X-23, Deadly Weapon + Bloodflow Connoisseur

Infinite +1/+1 counters on a creatureInfinite creature ETBInfinite creature LTBInfinite death triggers
  1. 1Activate Bloodflow Connoisseur by sacrificing the other Mutant.
  2. 2When the Mutant dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
  3. 3When the Mutant enters, X-23 triggers, putting a +1/+1 counter on X-23 and the other Mutant.
  4. 4Resolve the Bloodflow Connoisseur ability.
  5. 5Repeat.
Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight
+X-23, Deadly Weapon
+Viscera Seer
#7

Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight + X-23, Deadly Weapon + Viscera Seer

Infinite +1/+1 counters on a creatureInfinite creature ETBInfinite creature LTBInfinite death triggers
  1. 1Activate Viscera Seer by sacrificing the other Mutant.
  2. 2When the Mutant dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
  3. 3When the Mutant enters, X-23 triggers, putting a +1/+1 counter on X-23 and the other Mutant.
  4. 4Resolve the Viscera Seer ability.
  5. 5Repeat.
Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight
+X-23, Deadly Weapon
+Bartolomé del Presidio
#8

Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight + X-23, Deadly Weapon + Bartolomé del Presidio

Infinite +1/+1 counters on a creatureInfinite creature ETBInfinite creature LTBInfinite death triggers
  1. 1Activate Bartolomé del Presidio by sacrificing the other Mutant.
  2. 2When the Mutant dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
  3. 3When the Mutant enters, X-23 triggers, putting a +1/+1 counter on X-23 and the other Mutant.
  4. 4Resolve the Bartolomé del Presidio ability.
  5. 5Repeat.
03

Legal formats

historictimelessgladiatorlegacyvintagecommanderoathbreakerbrawlcompetitivebrawldueltlr
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