Containment Priest (Invocation) [Amonkhet Invocations] SV65 All Mountains are Plains

All Mountains are Plains

This timeworn relic was responsible for many of Urza's victories

) If Searing Shot hits a hero

the player can activate mana abilities only if they're from lands that player controls and only if mana they produce is spent to activate other mana abilities of lands the player controls and/or to play that card

Then if there are four or more charge counters on it

Containment Priest (Invocation) [Amonkhet Invocations] SV65 All Mountains are PlainsSet: Amonkhet Invocations Type: Creature Human Cleric Rarity: Mythic Cost: {1}{W} Flash If a nontoken creature would enter the battlefield and it wasn't cast, exile it instead.