Pestilent Terrors

Lurk ( Whenever an opponent casts a spell with
greater converted mana cost than this creature's
converted mana cost, you may put this card onto
the battlefield. )
When Pestilent Terrors enters the battlefield
you may discard a card with lurk, if you do,
search your library for a card with lesser
converted mana cost than the discarded card
and put that into your hand.