I did try to find answers that can help the decks goals where possible
7 and 8 show that on average, Warp World will reveal 2 creatures ( sd = 1 creature) and 3 lands ( sd = 1 land) in this particular example
It flies, is 2/2 and has two other abilities
Changing the as-fan of rarities (that is, the count of each rarity of card you'd expect to see when you open a booster), introducing more variance in slots, adding in more "outside" cards, all impact how the set plays and thus requires us to change how we build the set
Mutate 1W/U RR (If you cast this spell for its mutate cost, put it over or under target non-Human creature you own
Mazirek gives a strong incentive to pursue sacrifice strategies because they can be utilized to produce card advantage, ramp mana, or damage opponents