What's Horrors Is Mine

What's Horrors Is Mine is a Dimir (blue-black) control and mill deck in the Commander format, focused on manipulating opponents' resources and winning through deck depletion and control. The primary strategy involves using cards like Fractured Sanity, Maddening Cacophony, and Traumatize to mill opponents' libraries, while leveraging control elements such as Mind Flayer, Control Magic, and Damnation to manage the board state.

Key synergies include utilizing Umbris, Fear Manifest as a potential Commander to capitalize on exiling opponents' cards, and Notion Thief to disrupt opponents' draw strategies while gaining card advantage. The deck further enhances its disruption capabilities with theft effects like Bribery and Corrupted Conscience, allowing it to turn opponent's threats against them.

Supporting these strategies are mana-fixing and acceleration from cards like Sol Ring, Arcane Signet, and dual lands such as Darkwater Catacombs. The deck's win condition primarily revolves around controlling the game state and depleting opponents' libraries, making it a potent choice for players who enjoy strategic, long-game control tactics.