This represents an evolutionary shift for Commander
Like Strixhaven , the source material for Avatar revolved around the main characters learning and growing stronger, so the mechanic was a perfect fit in terms of flavor
For instance, Skysovereign, Consul Flagship being a 5-drop legendary artifact was always likely to mean it would see less play than a card with early and late game usefulness like Grim Flayer
Did the other letters consent
The types usually follow this pattern: TCG typeColorType(s) GrassGreenBug, Grass 1 FireRedFire WaterBlueWater, Ice LightningYellowElectric PsychicPurplePsychic, Ghost, Poison1 FightingBrown/OrangeFighting, Rock, Ground DarknessBlackDark MetalSilverSteel ColorlessWhiteNormal, Flying, 2 DragonGoldDragon2 FairyPinkFairy 1 ^ Starting with the Diamond & Pearl expansion, Poison-type Pokmon in-game are now Psychic