For this cube, I took a standard Powered Vintage Cube list, and sprinkled it with only a little bit of spice. You may be thinking, "How would you define spice?" Well...
Spice: Mechanics or Cards that aren't typically included for reasons of preference
Spicy cards would include the Initiative cards, Comet, Silver Borders, Mystery Booster Playtest Cards, Conspiracies, Draft-specific cards ala Lore Seeker, etc.
Some people can't handle any spice. Some people love spicy cards. But I am somewhere in between those extremes, hence the Mild Spice Vintage Cube.
I started with a standard Vintage Cube List, then added a pinch of spice (and some support cards for said spice). The spice in my list includes:
-Mox Poison & Jack-in-the-Mox: because opening more power is fun.
-Force of Rowan: because we already have Force of Will in, it wouldn't be fair otherwise.
-Nearby Planet: because I wanted to see how good it is with the Domain package.
-Frogkin Kidnapper: because a black Elite Spellbinder sounded fun.
-Wrath of Leknif: because it is a fitting signpost for UW control.
-Delve Too Deep: because good graveyard-matters cards are fun.
-______ Goblin: because big red decks are fun.
-Arcane Savant: because it can be a timewalk on a stick, a blue Fury or Pyrogoyf, blue Metamorphosis Fanatic, a flightless Mulldrifter, or a dozen other fun-sounding things.