Kambal, Consul of Allocation

Oracle Text

Whenever an opponent casts a noncreature spell, that player loses 2 life and you gain 2 life.

Card Rulings

9/20/2016 Kambal’s ability resolves before the spell that caused it to trigger.
9/20/2016 A noncreature spell is a spell that isn’t a creature at all. An artifact creature spell isn’t a noncreature spell. Lands are never spells.