It's hard to make a top ten list when you have 35 or 50 cards across the game with that factor
A turn 5 Toxrill can completely warp the table
Moreover, it is another repeatable recursion engine as it has: At the beginning of your second main phase, if a player was dealt combat damage by a Zombie this turn, mill three cards, then you may return a creature card from your graveyard to your hand
When rounding out your deck, if youre torn between a creature and a noncreature spell, lean toward the creaturePilots are the fuel that keeps your deck firing on all cylinders
That said, if I'm right about how I interpret the archetypes that have already been spoiled Red/Black would have some reanimation/aristocrats pieces from black and equipment/spell-slinging from red
Planetarium of Wan Shi Tong is a great card in any deck that aims to ramp up to high mana cost cards, as it can cheat something out for you each and every turn