Thanos, The Mad Titan

Trample, reach
Whenever Thanos is equipped with The Infinity
Gauntlet, exile half of each opponent's libraries
rounded up. Then, each opponent shuffles their permanents and distributes them as evenly as
possible into two face down piles. Randomly exile
one of those piles. The remaining pile returns
to the battlefield tapped. Repeat this process for
each opponent's hand, except the remaining piles return to their hand.