Kieth, Goblin Shapshifter

+1: Put a Tracked counter on target creature or plainswalker. Deal one damage to target opponent.
-2: Until end of turn, Kieth Goblin Shapeshifter becomes another target creature with a tracked counter on it and gains indistructible and Haste.
-7: Gain control of all creatures and plainswalkers with a tracked counter on it. Untap them, they gain haste.