Every axie can be released for class mementos. This sweeps the marketplace for the ones whose mementos are worth more than the axie itself — buy, release, sell the materials.
Releasing runs through ReleaseAxieForMaterial on Ronin. The contract rolls a
random quantity inside a range fixed by the axie's breed count and its
on-chain level, then splits that quantity across the classes present on the
axie — its own class counts twice, each of the six body parts once. The tables used here were
read back from the deployed contract, so the yield range is exact.
On-chain level, not battle level. The contract reads the level stored on the Axie NFT, which only moves when an axie ascends. Most listings show a higher off-chain level; valuing them by that number overstates the yield by a whole bonus tier. Cards show both.
Materials value is the midpoint of the range priced at the current cheapest memento asks — the range is a genuine roll, so a single release lands anywhere between the min and max shown. Cost is the asking price plus the Ronin VRF fee the release transaction pays, read live from the contract for a one-axie release; releasing several axies in one transaction splits that fee and does better than shown. Marketplace gas on the purchase itself is a fraction of a cent and is not modelled.
Falling listings. A marketplace sell order can walk its ask down a straight line between a start and an end price, then sit at the end price — it does not expire. The Falling filter on the All tab keeps the ones heading below the point where the mementos would cover them. Each card gives you both ends: Buy now is what the trade returns at today's ask — usually a loss, often a heavy one — and At floor is what it returns once the ramp bottoms out, with the crossing price and countdown in between. These are meant to be watched, not bought today, which is exactly why ranking on the current price hides them.
Coverage. The marketplace only pages 10,000 deep, so a single cheapest-first sweep never reaches the axies worth releasing. This scans the cheapest listings inside each (breed count × level band) slice instead, which puts every yield tier in range. A falling listing that still sits far above its slice's cheapest listings won't be seen until its ask comes down into range, so treat the countdowns as the ones already found, not all that exist. All means all of it — every releasable listing the sweep holds, ranked and paged. Ordering and filtering happen on the server; only the page you are looking at is priced, which is why the whole market is browsable without waiting for it.
Not financial advice. Memento prices are thin — check the depth on the marketplace before buying, and remember that dumping several hundred mementos moves the price you get.