Kor Spiritdancer gets +2/+2 for each Aura attached to it.
Whenever you cast an Aura spell, you may draw a card.
6/15/2010 If you cast an Aura spell, Kor Spiritdancer’s second ability triggers and goes on the stack on top of it. The ability will resolve before the spell does.
6/15/2010 The second ability triggers when you cast any Aura spell, not just one that targets Kor Spiritdancer.