Cosmic Cube

Cosmic Cube is a Simic (blue-green) Standard value/control deck built around Construct a Cosmic Cube and other high-upside spells to generate incremental advantage and eventually overwhelm the opponent.

It plays a reactive game early with cards like Negate, Essence Scatter, Three Steps Ahead, and Tishana’s Tidebinder, while using Quick Study, Analyze the Pollen, and Jace Reawakened to find key pieces and keep cards flowing. The deck’s main synergies come from copying or doubling impactful permanents/spells with cards like Doppelgang and leveraging strong late-game threats such as Horned Loch-Whale and Season of Weaving.

Overall, it wins by surviving the early game, accumulating value, and taking over with large swingy plays and repeated advantage from its Cube-centered engine.