Standard has seen its fair share of powerful combo decks, but few feel as game-breaking as casting spells for free. Simic Omniscience takes this concept to the extreme, using ramp, draw, and protection to set up one of the most explosive finishers in the format.

Once the namesake enchantment hits the battlefield, the deck unleashes an unstoppable cascade of threats and value, turning even the most grindy matchups into overwhelming victories.

This deck centers on getting Omniscience onto the battlefield, which lets you cast spells from your hand for free and enables explosive turns. To support that, it runs a suite of ramp and draw spells (like Consult the Star Charts) to accelerate your mana and dig through your deck toward key pieces. It also includes interaction and protection, allowing you to survive long enough to assemble the combo.

Once Omniscience is in play, the deck attempts to chain together powerful spells and threats — in particular, the enchantment Roiling Dragonstorm works well as a win-con by triggering a cascade of effects. The deck also leverages creatures like Marang River Regent and Kona, Rescue Beastie to press advantage or provide incremental value.  

Because this strategy is vulnerable to disruption (counterspells, hand disruption, removal), the deck runs protection & interaction in the form of Dispelling Exhale, Lost in the Maze, and Unauthorized Exit to buy time and maintain board presence. The goal is to survive the early and mid-game, assemble Omniscience, and then snowball by casting free spells to take over the game.  

You check the full decklist and sideboard here: Simic Omniscience Deck for Magic: the Gathering

Against aggressive decks, the Simic Omniscience strategy focuses on survival and stabilization. Cheap interaction like Lost in the Maze and Unauthorized Exit helps delay early pressure, while blockers such as Kona, Rescue Beastie provide both defense and can cheat the enchantment later on. The goal is to buy enough time to resolve Omniscience into your board, where the deck’s raw card advantage and free spells can completely outscale the opponent’s tempo. Once stabilized, you can overwhelm aggro decks with repeated value and finish them off with the chain of Marang River Regents’ ETB ability.

Against control and midrange, the plan shifts toward resilience and inevitability. The deck carefully deploys threats to bait removal and counterspells while leaning on card draw to keep the hand full. Key spells are protected with Dispelling Exhale, allowing Omniscience or your win conditions to stick when it matters most. In longer games, the ability to cast spells for free ensures you’ll eventually outlast the opponent’s resources, making patience and timing critical to breaking through control-heavy matchups.

Simic Omniscience isn’t just about winning—it’s about creating a spectacle every time the deck goes off. With careful play, patient sequencing, and the right mix of protection, the deck can dismantle aggro swarms and outlast control’s answers before dropping its signature enchantment to dominate the game. For players who love high-risk, high-reward strategies that explode with flair, this deck offers a truly unforgettable Standard experience.