I don't know how you feel about optimizing for digital, but I feel this ability might be better as ": Return ~ from your graveyard to your hand. Activate only if a Human died this turn while this card was in your graveyard."

I noticed also that the ability triggers on any Human dying. Do you want to encourage playing Humans or discourage it?

Addendum: I feel, this kind of effect will serve more as discard fodder than life gain. I sure hope there is a way to exploit that.

Humans- that's just flavor and they're common in the set. It's limited fodder.

Idk about how I feel on changing the ability. On one hand, I don't see Food being run through in a circle enough where one death would allow the player to loop this as much as they can afford to in a single turn. But then, there's probably something somewhere that'd make this degenerate, and I'm generally against anything degenerate.