Honorary mentions for future remembering
--Recruitment Officer - Possible upgrade to Mardu Woe-Reaper?
Recommission - If this had cycling, I’d been down.
Siege Veteran - Super close, not sure if I have the soldier support.
Steel Seraph - Really strong, but not quite right for this cube.
Arcane Proxy Flashback some spells and be a cool artifact baby.
Teferi, Temporal Pilgrim
Mishra’s Command: Not quite there for me. Maybe a replacement for Collective Defiance though?
Mishra’s Research Desk Artifact and discard shenanigans type thing
Bitter Reunion: Sorcery Thrill of Possibility that has a little hasty upside and some delirium synergies.
Scrapwork Mutt
Simian Simulacrum Solid value Unearth artifact
Perennial Behemoth Playing lands from your graveyard has always been fun.
Portal to Phyrexia Big Goofy Reanimation Target
Third Path Iconoclast - Go wide spells support. Would replace Sprite dragon which I love.
Tocasia, Dig Site Mentor: Fun three color legend that has some synergies.
Argoth, Sanctum of Nature: I’m curious about how this plays out, but I’m not super interested in adding the other Titania. Maybe you get both halves if you draft one.