Thanos, the Mad Titan

Indestructible
{x}{2}, Reveal an instant or sorcery fron your hand
with converted mana cost X: exile that card with
an infinity counter on it. If there are more than
six cards with infinity counters on them, return
all cards with infinity counters to their owners
hands.
{x}{u}: You may copy any instant or sorcery
with an infinity counter on it and converted
mana cost equal to or less than X plus 3.