Thanos, The Mad Titan

Indestructible
Infinity Quest (Whenever Thanos, Mad Titan enters the battlefield or attacks, search your library for a “Stone” artifact card, reveal it, and put it into your hand. Shuffle your library afterward.)

Snap of Destiny ( 6: Exile Six “Stone” artifact cards from your battlefield or graveyard. Each opponent exiles half of their library and permanents rounded down.)