While Ashiok, Nightmare Muse, will be the key engine in this strategy, there's also Mind Flayer, the Shadow and Nightveil Specter , who exile cards and let you play them yourself
Black/green, in particular, has plenty of Food to unlock Candy Grapple's -5/-5 potential
Since Peer Past the Veil is still on the stack while it's resolving, it won't count itself
Changes in the number of unlocked doors among Rooms you control that occur after the ability resolves won't affect the power or toughness of the token
The Phyrexian Praetor doubles all of the +1/+1 counters youll want to be adding to your creatures with the added benefit of halving any counters your opponents want to place
33, 44, 55, 66, 77 In design, I assign these codes to different designers on the team (one unique code per designer)