You don't choose a target for Wick's Patrol's ability at the time it triggers. Rather, a second "reflexive" ability triggers when you mill three cards this way. You choose a target for this ability as it goes on the stack. Each player may respond to this triggered ability as normal.
2024-07-26
If your library has two or fewer cards in it when Wick's Patrol's ability resolves, you'll mill as many cards as you can, but the reflexive ability won't trigger.
2024-07-26
The value of X is calculated only once, as the reflexive ability resolves.
When this creature enters, mill three cards. When you do, target creature an opponent controls gets -X/-X until end of turn, where X is the greatest mana value among cards in your graveyard.
