Duck, Duck, Crow

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 of your library in a random order. Multiple
instances of cascade each trigger separately.)
Storm. (When you cast this spell, copy it for each
spell cast before it this turn.)
Well, the cards start coming and they don't stop
coming and they don't stop coming