Darth Sidious, Manipulator

Menace, First Strike, Indestructible
Whenever Darth Sidious, Manipulator deals
combat damage to a player, put a Force Lightning
counter on it.
If Darth Sidious, Manipulator has 5 or more Force Lightning counters on it destroy target creature
with power 3 or less.
{5}{u}{b}{r}{t} Gain control of target creature.
At the beginning of each end step, if you control
10 or more creatures that you don't own,
you win the game.