Ikerra, Dream Stalker

Fear, Lifelink
Whenever an Opponent casts a spell if they have already cast a spell this turn you may pay 2 life if
you do you may exile the top card of their library
you may play that card for as long as it remains
exiled and you may use mana as though it were
mana of any color play that card
"A manifestation of your fears a child of damnation"
-Tezzeret