Traptrix Atrax

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 card
is unaffected by instants. You can cast "trap hole"
instants from your hand at no mana cost. "trap
hole" instants you cast can't be negated.