Spontaneous Combustion [Tempest] SPA Kirin celestial Return Necrotic Plague from its

Return Necrotic Plague from its owner's graveyard to the battlefield attached to that creature

Others think it's crystallized life energy

King Henry the Eighth

Set: Future Sight Type: Creature — Human Wizard Rarity: Rare Cost: {3}{B} At the beginning of each player's upkeep

Set: Champions of Kamigawa Type: Sorcery — Arcane Uncommon Cost: {4}{U} Look at the top three cards of your library

Spontaneous Combustion [Tempest] SPA Kirin celestial Return Necrotic Plague from itsSet: Tempest Type: Instant Uncommon Cost: {1}{B}{R} As an additional cost to cast this spell, sacrifice a creature. Spontaneous Combustion deals 3 damage to each creature. "Heat of battle" is usually a metaphor.