Zander

I hate to sound like a broken record, but go into the UU room on showdown, ask around and fucking take off the Bias Goggles. wonder guard is the most broken ability in the game, no matter what you say, having that many IMMUNITIES (I put it in caps so you don't confuse them for resists) is about as broken as can get. And you don't seem to understand how exactly Powercreep works, so allow me to explain as simple as I can: Big Strong Thingy gets replaced by Bigger Stronger Thingy. And about that quick killing and stalling, THAT'S LITERALLY OU. If you don't like it, don't play it. Crazy right, not playing something you don't like

Everyone else has pretty much covered it once again, but I’ll just make it clear that giving hydreigon, a pseudo-legendary with great offensive capability and an already good typing, 13 immunities from wonder guard is not OU potential; that is Uber potential.  And at that point you wouldn’t even be allowed to play it in OU.

Just to clarify, I wasn't referring to the lore regarding the lernean hydra itself, but to the ingame lore regarding Hydreigon (i.e Pokedéx entries), as a being whose purpose is to consume and destroy.