Phenax, God of Deception + Sewer Nemesis + Terisian Mindbreaker

Phenax, God of Deception

Sewer Nemesis

Terisian Mindbreaker

How it works

1. Declare Terisian Mindbreaker as an attacker attacking the opponent named by Sewer Nemesis. Terisian Mindbreaker triggers, causing the opponent to mill half their library, rounded up.
2. Activate Sewer Nemesis by tapping it, causing the opponent to mill cards equal to the cards in their graveyard, milling the remainder of their library.