Liminal Warden

Flash; Delve
When Liminal Warden enters the battlefield,
exile another target creature with mana value X
until Liminal Warden leaves the battlefield.
As long as a card exiled with Liminal Warden has flying, Liminal Warden has flying. The same is
true for first strike, double strike, deathtouch,
haste, indestructible, lifelink, menace, reach,
trample, and vigilance.