So... we get 24 pillars, 18 creatures, 9 spells, 9 permanents.
Some of my ideas:
Pillars: Well, duh, for the most part. Maybe a couple quantum pillars, though, for novabows?
Creatures: 3 ghosts for sure, probably go with mostly time cards.
Spells: 3 reverse times, 3x deflag, 3x steal
Permanents: 3x Eternity, 3x Hourglass
Not sure what else we should take, or how much has already been done.