Squall, SeeD Mercenary Another one that isn't the most powerful (you'll see this observation a lot on this list), but his design is undoubtedly unique and fun
Arahbo, Roar of the World (Secret Lair) The OMG Kitties
Demonic Hordes The best way to use Demonic Hordes is if you have untap shenanigans
You're making sure you have plenty of ways to give your powerful creatures haste, trample, and forms of protection, like Swiftfoot BootsSwiftfoot Boots, Garruk's UprisingGarruk's Uprising, Kessig Wolf RunKessig Wolf Run
You can dump a ton of mana into it, sacrifice all your deserts, then replay them from the graveyard with Hazezon
Its also cute to imagine this pudgy little bird flapping its tiny wings with all its might to get off the ground