Right now: the best rip in Battles of Legend: Monster Mayhem is the Booster Box [1st Ed] (24 packs) at $54.72 against $107.23 of expected pulls — a +67% margin after ~15% selling fees, and a 99% chance it actually pays for itself. Figures refresh every two hours.
Battles of Legend: Monster Mayhem (BLMM, June 13, 2025) returns the Battles of Legend line to Starlight Rares after two Quarter Century sets. Packs hold five foils, boxes 24 packs, and the card list is the line's largest yet, with more than 120 Ultra Rares and 25 Starlights. That breadth keeps the floor thin per card but gives the upgrade slot plenty of targets.
Every pack is modeled as four Ultra Rares and a Secret Rare slot that upgrades to a Starlight about once per three boxes. The Starlight Blue-Eyes White Dragon is the headline, well clear of Galatea-i, the Orcust Automaton, Lady's Dragonmaid and Necroquip Princess. Skull Servant, Dark Paladin and Elemental HERO Neos give the Starlight list its retro depth beyond the meta cards.
The 1st Edition booster pack and the 24-pack 1st Edition box are tracked. With so many Ultra Rares in the pool, the box's floor depends on a wide spread of modest singles, so live prices matter more than any one pull. Konami publishes no ratios, and the Starlight rate is a provisional community estimate. The fee-adjusted margins for both products are in the live table below.
Sealed products: price vs. expected value
| Product | Margin after ~15% fees | Market price | EV of pulls | Odds it pays for itself |
|---|---|---|---|---|
| Booster Pack [1st Ed] | +23% | $3.10 | $4.47 | 43% |
| Booster Box [1st Ed] (24 packs) | +67% | $54.72 | $107.23 | 99% |
Pull-rate model
Battles of Legend: Monster Mayhem packs hold 5 cards; the slots below are the ones that carry value.
| Slot | Outcome | Est. chance |
|---|---|---|
| Ultra Rare #1 | Ultra Rare | 100% |
| Ultra Rare #2 | Ultra Rare | 100% |
| Ultra Rare #3 | Ultra Rare | 100% |
| Ultra Rare #4 | Ultra Rare | 100% |
| Secret slot | Secret Rare | 98.6% |
| Secret slot | Starlight / QC Secret | 1.4% |
Community-estimated rates — no publisher discloses official pull odds. The calculator prices each outcome from live singles data.
FAQ
What are the chase cards in Monster Mayhem?
Blue-Eyes White Dragon in Starlight Rare leads by a distance, followed by the Starlights of Galatea-i, the Orcust Automaton, Lady's Dragonmaid, Necroquip Princess and Enlilgirsu, the Orcust Mekk-Knight.
How many Starlight Rares are in Monster Mayhem?
25. In the model, one replaces the pack's Secret Rare about once per three 24-pack boxes, and every Starlight shares the same odds, so Blue-Eyes is a long shot within an already rare slot.
Are Monster Mayhem pull rates official?
No. Konami publishes no ratios. The four-Ultra, one-Secret layout is fixed, but the Starlight upgrade frequency is a provisional community estimate and the least certain number on this page.
What are the odds a Booster Box [1st Ed] (24 packs) of Battles of Legend: Monster Mayhem pays for itself?
About 99% after ~15% selling fees (100% before fees) as of 2026-10-27, computed from the exact outcome distribution of the Battles of Legend: Monster Mayhem pack model rather than a simulation. The median Booster Box [1st Ed] (24 packs) returns $86.24 of cards after fees against its $54.72 price, and the chance of at least doubling your money is 15%. These odds refresh with every two-hourly price update.
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