It's unfortunate that the tokens Adeline makes aren't Knights as well, but additional Human creature tokens are certainly useful either way, especially considering that each one pumped out will add to Adeline's own power
Always watch them throughout play
Check out the full MtG-Multiverse planar entry for Mercadia to learn more
Sapphire continues the trend from Rise Of The Floodborn of showing how powerful synergy between characters can be with Huey, Dewy, and Louie, particularly with Huey's ability, Three Nephews, which allows you to draw three cards if one of each of the Nephews is on the field
If this card is in your GY: You can banish 3 copies of "Sabatiel - The Philosopher's Stone" from your GY, then target 1 monster on the field
Mewtwo unsurprisingly always goes for a high price as it is one of the more popular Pokmon