I started  building Dragon Priest, then decided to try something even weirder. Party Animal is still in Standard, and Priest has access to enough of the tribes that we can get quite a few +1/+1 buffs to minions in hand. Roll call:

Dragons: Giftwrapped Whelp, Ship's Chirurgeon, Starlight Whelp, Clay Matriarch

Pirate: Ship's Chirurgeon

Naga: Dreamboat

Beast: Scarab Keychain, Party Animal

Elemental: Fire Fly, Rolling Stone

Mech: Annoy-o-Tron

Demon: Observer of Mysteries

Quillboar: Rowdy Fan

I'm not expecting this to break the meta, but it seems like a lot of fun. Scale Replica will always draw a 1-Drop and Clay Matriarch, and Power Chord: Synchronize can double up a key minion.