Cheapest priced copy (Nemesis): $0.35 at Card Kingdom, near mint, their price list as of .
Ancient Hydra 
Creature — Hydra · 5/1 · Uncommon · Nemesis · #76
Fading 5 (This creature enters with five fade counters on it. At the beginning of your upkeep, remove a fade counter from it. If you can't, sacrifice it.)
{1}, Remove a fade counter from this creature: It deals 1 damage to any target.
Legal inCommanderLegacyVintage
Not legal inBrawlStandardPioneerModernPauper