Echidna, Skulking Fiend

Deathtouch, Partner with Typhon, Bane of
Olympus
Whenever a monster you control enters the battlefield under your control, you may look at
the top X cards of your library, where X is that monster's converted mana cost. Put up to one
monster card from among them into your hand,
and the rest onto the bottom of your library
in any order. (Non-Human, Non-God, Non
Demigod creatures are monsters.)