Strength of Lunacy is a uncommon Enchantment — Aura card from Torment (TOR), collector number 86. Current market price: $0.37 (foil $4.51), TCGplayer market prices via Scryfall.
Enchant creature Enchanted creature gets +2/+1 and has protection from white. Madness {B} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)