the first ant

cascade (When you cast this spell, exile cards from the
top of your library until you exile a nonland card
whose mana value is less than this spell's mana value.
You may cast that card without paying its mana cost if
the resulting spell's mana value is less than this spell's
mana value. Then put all cards exiled this way that
weren't cast on the bottom of your library in a
random order.)
ant spells you cast have cascade