Reflective Garrett

Whenever a creature enters the battlefield, add 1 to the counter on this card.
{u}{u}: Spend 2 counters to draw a card.
{u}{2}: Spend 7 counters to summon 3 1/1 Assassin Garrett tokens with deathtouch.
{u}{u}{u}{u}{3}: Spend 15 counters to win the game on your next turn.
"You underestimate my power"