Elderscale Wurm is a mythic Creature — Wurm card from Magic 2013 (M13), collector number 167. Current market price: $2.95 (foil $8.69), TCGplayer market prices via Scryfall.
Trample When this creature enters, if your life total is less than 7, your life total becomes 7. As long as you have 7 or more life, damage that would reduce your life total to less than 7 reduces it to 7 instead.