Elania, Last of the Mardu

Double Strike
Dash {2}{w}{r}(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.)

Raid — At the end of your second main
phase, if you attacked with a creature this turn,
untap each creature you control, after this phase,
there is an additional combat phase.