Draconic Tactician

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.)
When creatures you control enter the battlefield
from exile, they gain haste until end of turn.
"This job becomes a lot easier when you
think with portals."