Sect Dex, the Mad

Shadow, Psychic
Whenever a player puts one or more cards from his or her library into his or her graveyard, put a +1/+1 counter on Sect Dex, the Mad.
It is said that the nameless shade relived a new life every year with a new name and new title. On his sixteenth year in existence, he failed to properly reincarnate and went mad with realizations. He saw the futility of the entire multiverse...