Cards given out as challenge promos in the use C1 , C2 etc There are also promo cards with a D23 set ID, though the original D23 Expo set cards are part of the P1 set
T: Add GU
Heres an outline: 5-8 removal spells 4-6 card draw spells (including flashback cards) 4-6 payoffs (Sahagin, Shantotto, etc.) 2-3 other creatures (Wyvern, Ice Flan, etc.) 17 lands The deck is fairly simple to put together, and really doesnt want much outside of removal, card draw, and payoffs
(2021-07-23) Gaining a level is a normal activated ability
Im happy to see more demonstrate cards, but Im quite underwhelmed by this one
Not having ways to interact with your opponents' graveyard is as bad as not being able to destroy artifacts when facing an Artifact deck