Ensnared by the Mara Great Intelligence's Plan Hunted by The Family Blasphemous Act Enchantment (8) Day of the Moon Propaganda The Sound of Drums The Toymaker's Trap Blink Death in Heaven Genesis of the Daleks Wound Reflection Artifact (12) Sol Ring Wayfarer's Bauble Arcane Signet Lightning Greaves Mind Stone Talisman of Dominance Talisman of Indulgence Thought Vessel Commander's Sphere Laser Screwdriver Midnight Crusader Shuttle Cybership Land (37) Canyon Slough Choked Estuary Command Tower Creeping Tar Pit Crumbling Necropolis Darkwater Catacombs Dragonskull Summit Drowned Catacomb Exotic Orchard Fetid Pools Fiery Islet Foreboding Ruins Frostboil Snarl Gallifrey Council Chamber Haunted Ridge Island x2 Lavaclaw Reaches Mountain x2 Ominous Cemetery Path of Ancestry Reliquary Tower River of Tears Shadowblood Ridge Shipwreck Marsh Smoldering Marsh Stormcarved Coast Sunken Hollow Swamp x2 Temple of Deceit Temple of Epiphany Temple of Malice Temple of the False God Terramorphic Expanse Thriving Moor Plane (10) Aplan Mortarium Bowie Base One City of the Daleks Dalek Intensive Care Hotel of Fears Mondassian Colony Ship The Doctor's Tomb The Matrix of Time The Moonbase Unleash the Flux Commander, Theme, and Strategy The Grixis Masters of Evil deck switches up the formula

Its not overly difficult to untap and spend three mana during your first main phase after your opponents have dedicated all of their best creatures to swinging at other players, which means that Split Up is likely to be an instant classic of the board wipe genre
You can do this at instant speed too, which means you can do it as someone attacks you to suddenly have a horde to defend with
I would pick as many as possible to protect my creatures during combat
Notably, you can still benefit from the land drop without any lands in hand by hoping to draw a land from this effect
Necropotence has an especially hard time because they're paying life to draw cards and the three damage a turn is likely to kill them