The key tweak is the shift in how energy works: rather than filling your deck with specific energy cards, you simply select the type (or types) of a deck when building it, and energy is automatically generated once per turn for you to attach how you wish (for two-type decks, which are required for the Dragon Pokmon lines such as Dragonites, which type comes up next is randomised, which effectively replicates a multi-type deck equivalent in real life)
I dont really have answer
For crafting purposes, it doesnt matter
Flavor Text Dance to its beat, or it will dance on your grave
The Core and Sanctum of the Sun are suddenly that much more achievable
Ashling, Rimebound Color Indicator: Blue Legendary Creature Elemental Wizard Whenever this creature transforms into Ashling, Rimebound and at the beginning of your first main phase, add two mana of any one color