A semi-cheap deathtoucher that randomly comes back into play is awesome, and it charges you nothing extra for this added utility
Isshin, Two Heavens As One Is A New Take On Aggressive Magic Commanders Commander decks often don't focus on attacking because the amount of crazy shenanigans that can happen in combat is much less impressive than the combos with powerful creatures or instants and sorceries like in Strixhaven's Mystical Archive
Spot combos & power Surface infinite combos, hidden synergies, and Power, Salt, and Fear scores across all of your decks
Both of these were reprinted in the Modern Horizons 3 precon, and the Marvel is in the Aetherdrift precon
To no ones surprise, delve continues to be broken
Its a low-cost way to give your creatures flash since it also happens to be a useful mana rock