Card

Karn, Silver Golem

Mana cost {5}

Legendary Artifact Creature — Golem 4/4

Whenever Karn blocks or becomes blocked, it gets -4/+4 until end of turn. {1}: Target noncreature artifact becomes an artifact creature with power and toughness each equal to its mana value until end of turn.

Part of 155 known combos, one of them two-card. 2 official rulings.

Commander
Legal
Printing
Rare · USG · #298
Cheapest printing
€6.24
EDHREC salt
0.35

Scryfall · EDHREC

Bracket

  • B1 Exhibition — Not in the same deck as its two-card combo partner: Aetherflux Reservoir
  • B2 Core — Not in the same deck as its two-card combo partner: Aetherflux Reservoir
  • B3 Upgraded — Not in the same deck as its early two-card combo partner: Aetherflux Reservoir
  • B4 Optimized — allowed: No restriction beyond the banned list
  • B5 cEDH — allowed: No restriction beyond the banned list

Why

  • Two-card combo with Aetherflux Reservoir (early with Aetherflux Reservoir)

How Lotus Vault estimates a bracket

Bracket: Lotus Vault analysis, with Commander Spellbook flags

Combos

155 known combos, one of them two-card.

Combos: Commander Spellbook

Rulings

  • 2008-08-01 · Wizards of the Coast
    A noncreature permanent that turns into a creature can attack, and its {T} abilities can be activated, only if its controller has continuously controlled that permanent since the beginning of their most recent turn. It doesn't matter how long the permanent has been a creature.
  • 2004-10-04 · Wizards of the Coast
    The blocking ability triggers only once no matter how many blockers are declared.

Rulings: Scryfall · Wizards of the Coast