Vi, Piltover Enforcer

Trample
Whenever Vi, Piltover Enforcer deals damage to
an opponent, exile that many cards from the top
of your library. Until the end of your next turn,
you play those cards.
Dash {2}{r/w} (You may cast this spell for its dash
cost. If you do, it gains haste, and it's returned
from the battlefield to its owner's hand at the beginning of the next end step.)