Mystic Doom Sandwich is a common Stickers card from Unfinity Sticker Sheets (SUNF), collector number 11. Current market price: $0.19, TCGplayer market prices via Scryfall.
{TK}{TK} — Lifelink {TK}{TK}{TK} — This creature must be blocked if able. Whenever this creature becomes blocked, it gets +1/+1 until end of turn for each creature blocking it. {TK}{TK} — 1/4 {TK}{TK}{TK}{TK}{TK} — 6/8