Don't Try This at Home (Galaxy Foil) (391) [Unfinity]

If a hot source you control would deal damage to a permanent or player, it deals that much damage plus 1 instead. (Something is hot if it has hot things in its art, like fire or explosions.) {1}{R}, Sacrifice this enchantment: It deals damage equal to twice the number of hot cards in your graveyard to target creature or planeswalker.