Regdar, Bold Commander

+2: Gain control of up to one target creature until end of turn. That creature gets +2/+0 and gains first strike until end of turn.
0: Until end of turn, Regdar, Bold Commander becomes a 4/4 Human Warrior creature with first strike and indestructible that's still a planeswalker.
-4: After this phase, there is an additional combat phase, followed by an additional main phase.