RIVALHold. Draw. Battle.
Two wallets are selected. Two cards enter the arena. The battle winner takes both.
Qualify for the draw.
Hold at least 0.05% of supply at the snapshot. There’s no holding period: a new buyer can enter the next draw.
Meet your challenger.
Two different wallets are picked using their holding weight and waiting bonus. Cards are assigned randomly, then a separate 50/50 draw decides who takes the first turn.
Winner takes both.
The cards fight using verified HP and supported printed attacks. Both collectibles stay with the executor until the result is locked and the battle ends. Delivery resets the recipient’s waiting bonus.
Can’t battle? DRAFT.
A Trainer, unverified printing, unsupported effect or tied battle means one card per wallet. The reason is shown and saved in the receipt.
Which wallets qualify?
The highest holding tier sets your base weight.
| Share of supply | Base weight |
|---|---|
| 0.05% | 80 |
| 0.10% | 100 |
| 0.35% | 115 |
| 1.00% | 135 |
| 2.00%+ | 160 |
Pool, treasury, executor, system and program-owned wallets are excluded. Each qualifying wallet is a separate entry.
Your wait counts.
Each completed eligible round without a card adds waiting credit. Longer waits receive more of a shared bonus pool.
- Winning both cards resets the winner’s bonus.
- The losing challenger keeps their credit.
- A draft resets both recipients.
- No win cooldown. No guaranteed win.
The weighting formula
The waiting pool is capped at the total base weight. A wallet’s share of it is proportional to its missed eligible rounds squared.
weight = base + floor(B × misses² / S)B is the sum of all base weights. S is the sum of all missed-round counts squared. When S is zero, only base weights apply. Equal waits receive equal bonuses, regardless of holding tier.
Failed rounds do not add credit. Falling below the minimum at a valid snapshot resets credit. The second challenger is drawn from the remaining wallets using the same snapshot weights.
What sets the pack size?
Both challengers get the same pack tier. The funding policy follows fee volume, budgets both packs together and keeps a $1,000 reserve.
Pot, stats and budget previewBattle rules and card data
TCGdex supplies card-only images, HP, attacks, weaknesses and resistances. A match must identify the exact printing; a similar name is not enough. The Collector Crypt image remains the reference for the actual graded collectible.
This is a one-card arena, not the full tabletop game. Cards start at zero energy and gain one of their own type per turn. The opening player cannot attack on turn one. Each card then uses its strongest legal attack; equal damage uses the first printed attack. Printed weakness, resistance, discards and recoil apply. A double knockout or 80-turn limit is a DRAFT. Six Base Set printings are supported. Other printings require review before they can battle.
RIVAL’s format has no hand, deck, bench, evolution or Prize cards. Both cards start fully evolved. Rain Dance cannot draw extra energy from a hand; Energy Trans has no second friendly Pokémon to target. Energy Burn changes nothing when Charizard already has Fire energy. Strikes Back still applies, including on Machamp’s knockout. This is a custom automated format, not an official TCG match or an optimal-play prediction. The receipt records the exact rules version.
TCGdex card referenceWhat is connected in this demo?
The demo draws synthetic wallets, generates a fresh cryptographic seed, saves the result and simulates waiting-credit updates. Refreshing or replaying does not reroll a saved round.
Collector Crypt purchasing, a live token-holder snapshot, external verifiable randomness and on-chain delivery are not connected. No funds move. Before live operation, both packs must be reserved together above the protected balance floor, and waiting credits must update only after confirmed delivery.
Receipts let you reproduce the local calculation. They do not prove a live holder snapshot or an unbiased external seed.
RIVAL is independent. Provider links do not imply official affiliation.