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| Set: | Duskmourn: House of Horror Special Guests |
| Type: | Instant |
| Rarity: | Mythic |
| Cost: | {R} |
Unholy Heat deals 2 damage to target creature or planeswalker.
Delirium Unholy Heat deals 6 damage instead if there are four or more card types among cards in your graveyard. He turns every room into a crematorium.
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