Containment Priest

Flash
If a nontoken creature would enter the battlefield and it wasn't cast, exile it instead.

Phelia, Exuberant Shepherd

Flash
Whenever Phelia, Exuberant Shepherd attacks, exile up to one other target nonland permanent. At the beginning of the next end step, return that card to the battlefield under its owner's control. If it entered under your control, put a +1/+1 counter on Phelia.

Mother of Runes

{T}: Target creature you control gains protection from the color of your choice until end of turn.