Karn Liberated question.?

Karn is moving at sorcery speed during a main phase and anything that you do at instant speed is going on the stack. So it should look a lot like this:

Karn Targets Vampire Hexmage to Exile

Priority changes to Hexmage Controller

Controller uses an instant that targets Hexmage to destroy/sacrifice

Priority changes to Karn Controller

Anything at Instant speed(Negate/Cancel/etc. to stop that reaction).

If no Response then stack empties with last response with a legal target as it's first execution then if that sacrifice/destroy goes through on the Hexmage then Karn has no legal target and his ability will still get it's loyalty counters because it was executed with a legal target but the target was taken away.

Short Answer: Yes you can use Instants/Abilities that run at instant speed to destroy the target of Karn's ability. But it will still get the loyalty counters for executing the ability.

Mtg Karn Planeswalker

After your opponent activates the ability, yes, you're allowed to respond before it resolves. Getting rid of the target will counter the ability, because if all of a spell/ability's targets are illegal when it comes time for it to resolve, it gets countered by the rules. Getting rid of Karn won't do anything to help you, because it doesn't change the fact that the ability your opponent activated is still on the stack and will resolve when it comes time for it to do so.

Mike

http://themanapool.com/

one question. What game is this?