Izzet Spellementals wants to chain cheap spells to reduce the cost of Hearth Elemental and Eddymurk Crab, though cheap removal like Stab and Dark Deed requires additional damage to finish off these large threats (Eddymurk Crab is a 5/5 and survives Stab alone, but Dark Deed's -4/-4 combined with damage from Caustic Bronco or a blocker can finish it). Prioritize applying pressure quickly since this deck lacks a way to interact with your hand and needs time to assemble its engine. Case of the Stashed Skeleton and Forsaken Miner provide resilient early bodies against their small burn spells like Burst Lightning. With no sideboard changes, keep the maindeck's proactive removal and clock-based plan intact.
Mono-Green Landfall wants to go wide and scale creatures with landfall triggers, so Dark Deed and Stab help pick off small creatures like Sazh's Chocobo and Llanowar Elves before they snowball. Cecil, Dark Knight's deathtouch trades up with anything they land, and Kaito, Bane of Nightmares can tap down and stun their key threats. With no sideboard cards available, the 75 stays the same; focus on using removal proactively on mana creatures and Mightform Harmonizer rather than waiting. Case of the Stashed Skeleton provides a body to race, while Corpses of the Lost provides bodies to race and block Landfall's ground creatures.
This is a mirror-adjacent grind against another black-based midrange deck packing their own copies of Kaito, Bane of Nightmares, Cecil, Dark Knight, and Requiting Hex, so removal efficiency and card advantage matter most. Dark Deed answers their Cecil and Stab answers their Spyglass Siren cheaply, while Ral Zarek, Guest Lecturer's -1 discard and -2 reanimation help grind through their card advantage engines like Enduring Curiosity and threats like The Wondrous Wasp. Kaito, Bane of Nightmares is a house on both sides of the board, so protecting yours and pressuring theirs is critical. No sideboard swaps are available, so lean on sequencing removal to answer their early drops before Floodpits Drowner and Spyglass Siren stabilize their board.
Suggested new sideboard cards to pick up for the current metagame.