Calciderm is a uncommon Creature — Beast card from Eternal Masters (EMA), collector number 5. Current market price: $0.06 (foil $0.25), TCGplayer market prices via Scryfall.
Shroud (This creature can't be the target of spells or abilities.) Vanishing 4 (This creature enters with four time counters on it. At the beginning of your upkeep, remove a time counter from it. When the last is removed, sacrifice it.)