Chesed, Caffeine Addict

As long as you control this creature, gain the following benefits:
• Arbiter and Librarian creatures you control
gain +1/+1 and Annihilator {1}.
• When a Fixer or Color Fixer creature you
control attacks, the defending player mills 2 cards.
• If your opponent has no cards left in their
library, and has no creatures on the battlefield
under their control, you win the game.