All Will Be One is a mythic Enchantment card from Phyrexia: All Will Be One (ONE), collector number 118. Current market price: $16.50 (foil $19.01), TCGplayer market prices via Scryfall.
Whenever you put one or more counters on a permanent or player, this enchantment deals that much damage to target opponent, creature an opponent controls, or planeswalker an opponent controls.