The first is more effects like Psychomancer and Shard of the Void Dragon, both of which trigger off of artifacts being put into the graveyard
Plus, Delney keeps all of your un-buffed creatures partially unblockable and out of the graveyard until you say so
The deck is entirely about casting and supporting enchantments: ramping them out with cards like Jukai Naturalist, draw cards with Sythis, Harvest's Hand, wiping opposing creatures with Doomwake Giant, and eventually overwhelming the table with cards like Sigil of the Empty Throne
I not only expect to see tons of these in sideboards but also creature strategies to be built around this powerful artifact
Cards like Anowon buff Rogues, synergizing with spell steal and unblockable effects
Rapacious Guest adds additional synergies between food and the attack step