The second factor, rarity, is also multifaceted
10 Quick Fixer (Galaxy Foil) - $9.21 Attractions have quickly grown in popularity since their release as people realized they are both silly to use and in the right situations, very good
A global beta will arrive some time in 2022, but no hard dates have yet been provided
Aetherwind BaskerAetherwind Basker (1,988 Inclusions, 0% of 2,191,290 Decks) You know, I'm starting to see why green energy decks didn't catch on, and I don't think it's necessarily just the complete lack of dedicated energy commanders
It also opens the door to niche synergies where you reuse creatures with activated abilities like Loran of the Third Path or squeeze more value from your mana dorks by casting spells at instant speed