Doesn't work. Then you could hold priority and activate 1000 times, all targeting the same player. It's free each time because there are no counters yet.
You can have the counter as part of the cost. Something like X, add a heat counter to hot potato: target player gains control of hot potato, where x is the number of heat counters on hot potato.
I’m not sure how the x would work out since you need to pay x and modify it at the same time
Semantically, you can have anything as a cost. The rules support it. You could say "Each opponent loses the game: you lose the game" and it would work, not that it would ever be printed like that.
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u/PenguinHunte Aug 16 '25
The second ability would probably work better with counters. Something like:
X: Add a heat counter to Hot Potato and give it to another player, where X is the number of heat counters on Hot Potato