Keyword: Vigilance

Skyhunter Prowler

Flying, vigilance (This creature can’t be blocked except by creatures with flying or reach, and attacking doesn’t cause this creature to tap.)

Serra Angel

Flying
Vigilance (Attacking doesn’t cause this creature to tap.)

Serra Angel

Flying
Vigilance (Attacking doesn’t cause this creature to tap.)

Steadfast Guard

Vigilance (Attacking doesn’t cause this creature to tap.)

Steadfast Guard

Vigilance (Attacking doesn’t cause this creature to tap.)

Skyhunter Prowler

Flying, vigilance (This creature can’t be blocked except by creatures with flying or reach, and attacking doesn’t cause this creature to tap.)

Mirri, Cat Warrior

First strike, forestwalk, vigilance (This creature deals combat damage before creatures without first strike, it can’t be blocked as long as defending player controls a Forest, and attacking doesn’t cause this creature to tap.)

Serra Avenger

You can’t cast Serra Avenger during your first, second, or third turns of the game.
Flying, vigilance

Adarkar Valkyrie

Flying, vigilance
: When target creature other than Adarkar Valkyrie dies this turn, return that card to the battlefield under your control.

Court Hussar

Vigilance
When Court Hussar enters, look at the top three cards of your library, then put one of them into your hand and the rest on the bottom of your library in any order.
When Court Hussar enters, sacrifice it unless was spent to cast it.

Guardian of Vitu-Ghazi

Convoke (Your creatures can help cast this spell. Each creature you tap while casting this spell pays for or one mana of that creature’s color.)
Vigilance

Razia, Boros Archangel

Flying, vigilance, haste
: The next 3 damage that would be dealt to target creature you control this turn is dealt to another target creature instead.

Oathsworn Giant

Vigilance
Other creatures you control get +0/+2 and have vigilance.

Raksha Golden Cub

Vigilance
As long as Raksha Golden Cub is equipped, Cat creatures you control get +2/+2 and have double strike.