what ends hiding?

well, i know that attacking, unless you snipe, you reveal yourself. how about summoning something, casting haste, or battlefield control type spells? does that end your hide?

Casting doesn't automatically end your hide, but unless you're casting silently, you're speaking at full volume, so you'd take a fairly big penalty on the stealth check.

alrighty!

Basically,casting wont end the hide. But they can heary you talking loudly from behind that bush.