Shael, Sanctum Sentinel

Vigilance, trample, ward {3}

Whenever Sanctum Sentinel enters the battlefield or attacks, you may exile target creature until Sanctum Sentinel leaves the battlefield. Only one creature can be exiled by Sanctum Sentinel at a time.

Pay 5 life: Sanctum Sentinel becomes indestructible until
end of turn.

"As the sacred light flows, the sentinel rises, a guardian against the encroaching darkness."