According to trevor.btc, the Ninja NFT collection will have a fixed supply of 1,500 units, allowing top holders and community members to pre-order and customize their Ninja NFTs starting June 9. These NFTs can be placed on premium rare pizza sats and inscribed as 4-meggers, with users only needing to pay network fees. The official mint date is yet to be announced. This limited supply and unique customization features could drive significant trading activity and secondary market demand within the Bitcoin Ordinals and NFT trading communities (source: twitter.com/TO/status/1926426867491275022).