Kaervek's PurgeHow it works & interactions with other cards

Precision Destruction

When you cast Kaervek's Purge, you must choose a value for X. This choice determines both the mana cost of the spell and the specific mana value of the creature you can target. The spell specifically targets a creature whose mana value is exactly equal to X; it cannot target creatures with higher or lower mana values.

The Resolution Process

As the spell resolves, it attempts to destroy the target. If the creature is destroyed and put into the graveyard (it 'dies'), the second part of the ability triggers. The game checks the creature's power as it last existed on the battlefield to determine how much damage to deal to its controller. If the creature has indestructible or is otherwise not destroyed, no damage is dealt.

Common Pitfalls

A common mistake is forgetting that X must be exact. If you cast this for X=3, you cannot target a creature with mana value 2 or 4. Additionally, if the creature is exiled instead of destroyed (due to a replacement effect), the damage portion of the spell will not occur because the creature did not 'die'.

Timing Your Strike

Because Kaervek's Purge is a Sorcery, you can only cast it during your main phase when the stack is empty. It is best used on high-power creatures that have relatively low mana values, or when your opponent is at a low enough life total that the creature's power will result in a lethal blow.

Interaction examples

Basic Removal

You cast Kaervek's Purge with X=3 to target an opponent's 5/5 creature that costs 3 mana. Upon resolution, the creature is destroyed. Since it died, the spell deals 5 damage to that creature's controller.

Interaction with Reanimate

Reanimate

Your opponent uses Reanimate to bring back a creature with mana value 7 from the graveyard. On your turn, you cast Kaervek's Purge with X=7. Even though your opponent only spent one mana to Reanimate it, the creature's mana value remains 7, making it a legal target for your spell.

Searching for the Answer

Demonic Tutor

If you need to finish off an opponent, you can use Demonic Tutor to search your library for Kaervek's Purge. You can then cast the Purge by choosing an X value that matches a high-power creature on their board, ensuring the damage dealt is enough to win the game.