Primordial Hydra is a mythic Creature — Hydra card from Magic 2013 (M13), collector number 183. Current market price: $7.56 (foil $18.80), TCGplayer market prices via Scryfall.
This creature enters with X +1/+1 counters on it. At the beginning of your upkeep, double the number of +1/+1 counters on this creature. This creature has trample as long as it has ten or more +1/+1 counters on it.