Illusionary Wall is a common Creature — Illusion Wall card from Ice Age (ICE), collector number 78. Current market price: $0.22, TCGplayer market prices via Scryfall.
Defender, flying, first strike Cumulative upkeep {U} (At the beginning of your upkeep, put an age counter on this permanent, then sacrifice it unless you pay its upkeep cost for each age counter on it.)