Jul 13, 2023
How do stun counters interact with Shadowmoor/Eventide untap abilities? I'd assume they prevent them, but I'm not sure.
A stun counter on a permanent creates a replacement effect that makes the counter be removed rather than untapping the permanent the next time it would untap. This is actually amazingly good with abilities with the untap symbol, as that part of paying the cost of the ability gets modified to removing the counter, meaning the card will still be tapped and can be activated again. So for example, if Knacksaw Clique had been hit with Impede Momentum and was tapped with three stun counters on it, you could activate its ability up to four times on the same turn!