edhseer Commander synergy, explained
Legendary Creature — Mutant Villain
Mana cost: {2}{R}
Haste
Whenever one or more creatures you control that entered this turn attack a player, target creature that player controls can't block this turn.
triggered — restricts attacking or blocking
Causes: nothing.
Cares about: nothing.
a Villain deals combat damage — 49 cards in Whirlwind's colors can cause this (Whirlwind is one).
a creature attacks — 3,451 cards in Whirlwind's colors can cause this (Whirlwind is one).
When Whirlwind, Killer Cyclone attacks:
58 other cards care about it too. These are the ones with the most connections.
a creature blocks — 3,451 cards in Whirlwind's colors can cause this (Whirlwind is one).
When Whirlwind, Killer Cyclone blocks:
1 other card cares about it too. These are the ones with the most connections.
anything attacks — 3,451 cards in Whirlwind's colors can cause this (Whirlwind is one).
When Whirlwind, Killer Cyclone attacks:
19 other cards care about it too. These are the ones with the most connections.
a creature is cast — 3,468 cards in Whirlwind's colors can cause this (Whirlwind is one).
When Whirlwind, Killer Cyclone is cast:
10 other cards care about it too. These are the ones with the most connections.
a nontoken creature enters the battlefield — 3,511 cards in Whirlwind's colors can cause this (Whirlwind is one).
When Whirlwind, Killer Cyclone enters:
a creature enters the battlefield — 3,801 cards in Whirlwind's colors can cause this (Whirlwind is one).
When Whirlwind, Killer Cyclone enters:
57 other cards care about it too. These are the ones with the most connections.
anything enters the battlefield — 6,318 cards in Whirlwind's colors can cause this (Whirlwind is one).
5 other cards care about it too. These are the ones with the most connections.