The most obnoxious Kalonian Hydra deck I could think of for this summer’s Standard. Probably not worth taking to a Constructed GP, but the Magical Christmasland scenarios of this deck are without equal.
The objective is to stall the game until you can untap with Hydra, swing, and copy the doubling trigger with Resonator. While waiting for the Hydra to land, Strionic Resonator turns Elvish Visionary into a Mulldrifter, Borderland Ranger into a Power Ranger, and gives kicker to every spell you cast when Primeval Bounty is out.
To be fair, what will probably happen is that Hydra dies to Doom Blade and the whole plan goes up in flames. But I’m taking this to Friday Night Magic just to go 1 win / 3 losses and see the face of the “1” guy.
Kids: This deck is expensive but you can easily swap out the money mythics with cheaper cards. See below in the comments.