"Unraveling Mind Planar Chaos Theme Deck" Creatures (28) 1 Dauthi Slayer 1 Magus of the Arena 1 Ridged Kusite 2 Big Game Hunter 2 Brain Gorgers 2 Gorgon Recluse 2 Muck Drubb 2 Nightshade Assassin 2 Phantasmagorian 2 Reckless Wurm 3 Trespasser il-Vec 3 Undertaker 4 Mindlash Sliver 1 Mirri the Cursed Spells (8) 1 Dark Withering 1 Fiery Temper 1 Kor Dirge 1 Treacherous Urge 2 Lightning Axe 1 Browbeat 1 Disintegrate Lands (24) 14 Swamp 7 Mountain 3 Terramorphic Expanse This is a deck built around the Madness cards from Planar Chaos and Time Spiral
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It's particularly vulnerable to -1/-1 counters which thankfully aren't that common, but probably don't play this deck against Hapatra, Vizier of Poisons
On your next turn (the extra one), just repeat the process: play Walk the Aeons, sacrifice the three islands to bounce it back to your hand, then play the islands out of your graveyard
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Her -1 can exile two cards from your library and cast one, which seems stronger in 100-card formats like Commander and 300 card ones like Five Color than 60 or 40 card formats