Kaherdin, Seeker of Chaos

Haste
As long as it's not your turn, Kaherdin, Seeker of
Chaos isn't a creature.
When you cast your first instant or sorcery spell
each turn, you may pay {2}{r}. If you do, gain
control of target creature until end of turn.
Untap that creature. It gains haste until end of
turn.