Inspiring Unicorn

Whenever this creature attacks, creatures you control get +1/+1 until end of turn.

Killer Bees

Flying
{G}: This creature gets +1/+1 until end of turn.

Zebra Unicorn

Whenever this creature deals damage, you gain that much life.

Benevolent Unicorn

If a spell would deal damage to a permanent or player, it deals that much damage minus 1 to that permanent or player instead.

Steadfast Unicorn

{3}{W}: Creatures you control get +1/+1 and gain vigilance until end of turn. Activate only during your turn. (Attacking doesn't cause them to tap.)

Mesa Unicorn

Lifelink (Damage dealt by this creature also causes you to gain that much life.)

Owlbear Cub

Mama's Coming — Whenever this creature attacks a player who controls eight or more lands, look at the top eight cards of your library. You may put a creature card from among them onto the battlefield tapped and attacking that player. Put the rest on the bottom of your library in a random order.

Rider in Need

Create a 2/2 white Knight creature token with vigilance. (Then exile this card. You may cast the creature later from exile.)

Lonesome Unicorn

Lonesome Unicorn // Rider in Need

Captivating Unicorn

Constellation — Whenever an enchantment you control enters, tap target creature an opponent controls.

Pearled Unicorn

Razorclaw Bear

Whenever this creature becomes blocked, it gets +2/+2 until end of turn.

Ronom Unicorn

Sacrifice this creature: Destroy target enchantment.

Regal Unicorn

Bear Cub

Prized Unicorn

All creatures able to block this creature do so.

Celestial Unicorn

Whenever you gain life, put a +1/+1 counter on this creature.

Loyal Unicorn

Vigilance
Lieutenant — At the beginning of combat on your turn, if you control your commander, prevent all combat damage that would be dealt to creatures you control this turn. Other creatures you control gain vigilance until end of turn.

Revered Unicorn

Cumulative upkeep {1} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)
When this creature leaves the battlefield, you gain life equal to the number of age counters on it.