Phantasmal Sphere is a rare Creature — Illusion card from Alliances (ALL), collector number 32. Current market price: $0.55, TCGplayer market prices via Scryfall.
Flying At the beginning of your upkeep, put a +1/+1 counter on this creature, then sacrifice this creature unless you pay {1} for each +1/+1 counter on it. When this creature leaves the battlefield, target opponent creates an X/X blue Orb creature token with flying, where X is the number of +1/+1 counters on this creature.