Traptrix Nepenthes

Haste
If you haven't yet cast a creature this turn, you
may cast this creature at no mana cost. If you do,
you can't cast another creature this turn except
by card effects (this isn't a card effect). This
creature is unaffected by instants. Once per turn,
when you cast a "trap hole" instant, you can add
to your hand or cast at no mana cost 1 "traptrix"
creature from your deck.