Savage Warrior of Mardu

Whenever Savage Warrior of Mardu enters the battlefield and/or attacks, it gains your choice
of lifelink, first strike, menace or trample until
end of turn.
Dash {1}{r}{w}{b} (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.)