Iymrith is among the better options for tap-out control finishers in Cube, and while this wont be the most powerful strategy in Vintage Cube, this card is definitely playable even there with the right supporting cast
Olivia effectively turns your graveyard into a second hand, making board wipes much less effective against you
Cid, Freeflier Pilot I generally want my equipment commanders to cheat on equip costs or reward me for controlling equipped commanders, but Cid, Freeflier Pilot takes the archetype another, grindier way
Cityscape Leveler feels like a slightly dumbed down version of Ulamog, the Infinite Gyre, straddling the power territory just below the colorless titans, making it something of an honorary Eldrazi
Whichever one you go for, make sure to pack your deck with evasive creatures so you can shift the seat of power when you need to
Could it happen