Your search for "Genesis Hydra 172" revealed the following:
Genesis Hydra (C20) from Commander 2020, available at 401 Games Canada. Rarity: Rare Finish: Normal Artist: Peter Mohrbacher Card Text:When you cast this spell, reveal the top X cards of your library. You may put a nonland permanent card with...
Rock Hydra (LEB) from Limited Edition Beta, available at 401 Games Canada. Rarity: Rare Finish: Normal Artist: Jeff A. Menges Card Text:Put X +1/+1 counters (heads) on Hydra. Each point of damage Hydra suffers destroys one head unless R is...