Infinity Snap

Enchant creature with Infinity Gauntlet
attached to it
At the beginning of your upkeep, you win
the game if you control each of the six Infinity
Stones.
"The entire time I knew Thanos, he only ever had
one goal: to bring balance to the universe by wiping
out half of all life... If he gets all six Infinity Stones,
he can do it with the snap of his fingers." —Gamora