It feels very similar to a scrapped mechanic from Bloomburrow that batched together all animal creature types, albeit getting around the arguments of what is and isnt an animal by just listing a ton of them individually
Jumpstart takes the best parts of limited and constructed Magic and fuses them into a dynamic, innovative play experience
Most have sacrifice abilities for the token they make
And Standard is full of ways to make tokens, like job select in Final Fantasy, offspring in Bloomburrow, and mobilizing in Tarkir: Dragonstorm
Plus, late game, if you have the mana, you can morph, flip down, morph and potentially get two or three copies of something