Light monsters can detach her to be protected from destruction once per turn, while Dark monsters can detach her at the start of Damage Step to destroy that monster with her effect
Playtest cards are fine outside sanctioned events , and the key is they are not trying to be reproductions of real cards
Everything kicks off with a throwback to the newest core booster set of the year with Rising Rampage Special Edition
Stardust Phantom X LIGHT Level 1 [ Spellcaster / Effect ] ATK 0 DEF 0 When this card you control is destroyed by your opponent's card (either by battle or by card effect) and sent to your Graveyard, you can select 1 "Stardust Dragon" in your Graveyard and Special Summon it in face-up Defense Position
Towards the middle of the game attack with [BT22-040 Cendrillmon] to repeatedly play Token cards while damaging the opponent, then digivolve into [BT22-042 Nyabootmon]
4 Riverpyre Verge 4 Spirebluff Canal 4 Steam Vents 4 Willowrush Verge 3 Island 3 Mountain 2 Thor, God of Thunder 2 Mathemagics 1 Fire Magic 1 Impractical Joke 4 Price of Freedom 3 Splatter Technique 3 Three Steps Ahead 2 Emeritus of Ideation 1 Spell Pierce 1 Spell Snare 1 Disdainful Stroke Temur Lessons is effectively Izzet Lessons with Questing Druid, and I considered whether it deserved to be listed as a separate archetype