A locked fighter can be transferred; leads to game server unable to commit transactions, and unstoppable fighters

Since you can reroll with a different fighterType than the NFT you own, you can reroll bypassing maxRerollsAllowed and reroll attributes based on a different fighterType

Players have complete freedom to customize the fighter NFT when calling `redeemMintPass` and can redeem fighters of types Dendroid and with rare attributes

Fighters cannot be minted after the initial generation due to uninitialized `numElements` mapping

Non-transferable `GameItems` can be transferred with `GameItems::safeBatchTransferFrom(...)`

Can mint NFT with the desired attributes by reverting transaction

DoS in `MergingPool::claimRewards` function and potential DoS in `RankedBattle::claimNRN` function if called after a significant amount of rounds passed.