I forgot I posted this. I looked it up afterwards and token creatures do technically enter the graveyard before ceasing to be.
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OK so I was checking out this deck and I really like it. The gravepact thing *seems* like a genious idea... except surely it doesnt work? Do token creatures technically enter the graveyard? Because the wording says "enters the graveyard" not "dies" I think you're possibly misplaying this card. If you're not then... this is freaking genius!