The closest comparison I can think of is Phyrexian Arena, but Arena doesnt whiff just because you have no creatures
It's been errata'd from a 'carriage' (which implies the creature represents the whole unit) to 'Horse', so I guess the flavour of the mechanic is the horses just being lazy until they are 'fed' with a creature
Yuriko, the Tigers Shadow
At the beginning of your end step, if you control a creature with power 4 or greater, draw a card
(Go, Thanos-Copter!) Prior to being assigned to Magic: The Gathering | Marvel's Spider-Man , I was working as the "strong second" under Glenn Jones for a different set's Exploratory Design team
Well call our familiars to dispose of these corpses: Blade of the BloodchiefBlade of the Bloodchief, BloodghastBloodghast, Butcher of MalakirButcher of Malakir, Dusk Legion ZealotDusk Legion Zealot, Glass-Cast HeartGlass-Cast Heart, Heirloom BladeHeirloom Blade, Kindred BoonKindred Boon, Martyr of DuskMartyr of Dusk, Nighthawk ScavengerNighthawk Scavenger, Oathsworn VampireOathsworn Vampire, Radiant DestinyRadiant Destiny, Sorin, Lord of InnistradSorin, Lord of Innistrad, Temple of the False GodTemple of the False God, Windbrisk HeightsWindbrisk Heights