Oblivion Stone is a must-add since it adds another way to add fate counters creatures
That said, the land selection could be better I wouldnt expect Bayous or Taigas, but I wouldnt be surprised to see them, either
Within each tier there is no particular order, just groupings with relative power levels between sets being close enough that there was no real need to differentiate
Additionally, this effect is highly situational, and not really worth using except in the situation where it allows you to win the game anyway, so I think we have to look at the Discover part almost as an alternate mode that you use when the creatures cant block part is irrelevant, which will be often It looks a lot like Goldvein Pick, a piece of equipment that really overperformed in Kaldheim
2 Booster has a theme
3 Memory Jar Drawing large amounts of cards in a single turn is the kind of play that one would use for faster, harder-hitting combos