Rogues and Pirates can make great use of this enchantment (they can go wide with small creatures), but Merfolk is probably the best fit
rk post, May 2016 New stuff
There are previews of some neat Double Faced cards, which can show two sides/forms of a particular character or creature, with the examples used including Garland, Knight of Cornelia which flips to become Chaos, The Endless , and Cecil, Dark Knight becoming Cecil, Redeemed Paladin (spoilers!)
At a bare minimum, you can sacrifice one 2/2 Zombie token to create two 2/2 Zombie tokens
The full art is equally gorgeous, with Tomohitos sharp lines and packed-in details really bringing the characters wildly different sides to life