MarbleZone
All lies and jest
Simple question really. I'm by no means a veteran of competitive battling, so sorry if a consensus has been reached by now. What ability do you prefer on Jellicent, or which one is more widely used?
Cursed Body needs the claustrophobic environment of Singles, where a disabled move can force a switch or even end a battle. In Doubles & Triples your opponent has more move options and losing one move isn't likely to break them. I say when in doubt go for the immunity.