What it does
"Feeder Mandibles" isn't an official Magic: The Gathering keyword or ability—it doesn't appear on any printed card or in the comprehensive rules. It may be a misremembered name, a custom/homebrew card, or confusion with similar flavorful abilities.
If you encountered this on a card, double-check the exact wording, since real mechanics like Devour (eating creatures for +1/+1 counters), Exploit (sacrificing a creature on entry), or Bloodthirst tend to evoke similar "feeding" flavor. Any of those could be what you're thinking of.
For an accurate ruling, share the precise card name or text, and I can explain how it works, the common rules pitfalls, and its relevance in Commander. I'd rather flag uncertainty than invent mechanics that could mislead your gameplay decisions.
Iconic cards with Feeder Mandibles
See all 1 →