Nelv, Archmage of Kaladesh

When Nelv, Archmage of Kaladesh enters the battlefield, create X 1/1 colorless Servo artifact creature tokens, where X is your life total.
Sacrifice a Servo: Target creature gets +0/+1 until end of turn.
Magic was once forbidden on Kaladesh. Now, it flourishes under the instruction of the archmages and pyromasters.