Mira, Brood Sister

Cascade, cascade (When you cast this spell, exile cards from the top of your library until you exile a nonland card that costs less. You may cast it without paying its mana cost. Put the exiled cards on the bottom in a random order. Then do it again.)
If you have cascade ability triggered at least once this turn before you cast Mira, Brood Sister or if you control a creature named Nira, Brood Sister, Mira Brood Sister has "creatures you control have haste".