I conclude "mechanic March" by looking at forage. Like other mechanics examined this month, it involves the graveyard.
701.59. Forage- 701.59a To forage means “Exile three cards from your graveyard or sacrifice a Food.”
Aside: forage refers to "Food." This is an artifact token:
111.10b A Food token is a colorless Food artifact token with “{2}, {T}, Sacrifice this artifact: You gain 3 life.”
Forage is a new mechanic, featured only in Bloomburrow (2024) on seven cards (all green and/or black). It is always presented as an optional ability, and sometimes only a possibility when a creature enters.
Forage is effectively an additional cost/benefit mechanism. To take advantage of forage's benefit, you need to pay the cost: either 1) have enough cards in your graveyard to exile or 2) have food tokens to sacrifice. Plenty of cards (in Bloomburrow and other sets) synergize well to get cards into your graveyard or create food tokens.
Being new, the forage card pool is small. That said, I like the mechanic and having two options to trigger it; that kind of flexibility can be huge.