Can I use an activated ability on an opponents turn?
Yep you sure can!
There are however cards like {Mindwarper} that specifically state that you can only activate their ability any time you would a sorcery.
Quote from: Sardok on December 11, 2013, 07:24:46 PM
Yep you sure can!
There are however cards like {Mindwarper} that specifically state that you can only activate their ability any time you would a sorcery.
Thank you :) this means my krenko EDH is gonna get crazy.
Unless it's a creature whose ability involves the "{T}" symbol and you summoned it right before your opponent's turn when you want to use it. While regular paid abilities are typically instant speed, summoning sickness does prevent tap abilities