The 2 damage that the Anathemancer deals to the Grazer isn't enough to kill it
Token doublers make your opponents experience a real threat: You can make twice the Treasure and twice the Vampire Demons to beat down with
Adding green gives you some powerful flexibility options, and Sidisi, Brood Tyrant makes more zombies for free
For example, if your opponent casts Fiery Confluence choosing the second mode three times, and you control Guardian Seraph (a creature with the ability "If a source an opponent controls would deal damage to you, prevent 1 of that damage"), you'll be dealt a total of 3 damage
Bane of the Living Not many players expect Bane of the Living in a regular game
Test - For development purposes only, so you'll likely be leaving this alone