Pain for All is a rare Enchantment — Aura card from Edge of Eternities Promos (PEOE), collector number 151p. Current market price: $1.24 (foil $1.05), TCGplayer market prices via Scryfall.
Enchant creature you control When this Aura enters, enchanted creature deals damage equal to its power to any other target. Whenever enchanted creature is dealt damage, it deals that much damage to each opponent.