Idolized is a rare Enchantment — Aura card from Fallout (PIP), collector number 327. Current market price: $4.50 (foil $5.06), TCGplayer market prices via Scryfall.
Enchant creature Enchanted creature has "Whenever this creature attacks alone, it gets +X/+X until end of turn, where X is the number of nonland permanents you control."