Keyword: Dash

Whenever Vaultbreaker attacks, you may discard a card. If you do, draw a card.
Dash (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.)

Whenever Flamerush Rider attacks, create a token that’s a copy of another target attacking creature and that’s tapped and attacking. Exile the token at end of combat.
Dash (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.)

Dash (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.)

Flying
Whenever a Dragon you control attacks, creatures you control get +1/+0 until end of turn.
Dash (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.)

Whenever Mardu Strike Leader attacks, create a 2/1 black Warrior creature token.
Dash (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.)

Whenever Goblin Heelcutter attacks, target creature can’t block this turn.
Dash (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.)