The new designs take advantage of what multiplayer formats can do that duel formats cant, and subtly play up whats fun about those games
Sheoldred, the Apocalypse In the same vein as Standard, it makes sense to see Sheoldred, the Apocalypse take a hit in Pioneer and Explorer
For those unfamiliar with the party mechanic, it rewards you for having one each of the Warrior, Cleric, Rogue, and Wizard creature types on the battlefield
I think it's worth keeping a slot open for Panharmonicon but if you're looking to go deep into the Blink theme, I think you're better off ditching defenders and just go with Roon of the Hidden Realm or Brago, King Eternal
If you plan on playing with Treasures, Clues, Food, or just artifacts in general, Id pick up as few copies while theyre still affordable