Avatar of the Horned Rat

+3: Create 2 Warpstone Tokens and one 1/1 Skavenslave Token.
-3: Sacrifice a Creature you control and create 2 Token copies of the Sacrificed Creature. The Legend Rule does not apply to Tokens created this way.
-13: Create X+1 Warpstone Tokens where X is equal to the Number of Warpstone Tokens you control.