I think the Tower is the best of this lot, and I would consider cutting Phyrexias Core to improve the colored mana situation
Toughness matters theme mixed with Food tokens is hopefully a viable option, but it takes a bit of playtesting to find a path
Unlimited also features a selection of cards that only include Heroism or Villainy aspects stuff like TIE fighters and probe droids on the Imperial side, and X-wings and Rebel Pathfinders on the Rebel side
If you find yourself with the right rares and removal to support it, or you think you can draw multiple Cranial Rams every game, the artifact plan can lead to a winning draft
Another possible one-drop to consider is Inventors Apprentice, though we will have to make some tweaks to really utilize it
In modern times this has meant reanimating creatures like Griselbrand and Inkwell Leviathan, but in the Old School 93-94 card pool the power level of available creatures is tuned down quite a bit