Force Bubble is a rare Enchantment card from Scourge (SCG), collector number 14. Current market price: $0.40 (foil $5.08), TCGplayer market prices via Scryfall.
If damage would be dealt to you, put that many depletion counters on this enchantment instead. When there are four or more depletion counters on this enchantment, sacrifice it. At the beginning of each end step, remove all depletion counters from this enchantment.