are all very powerful archtypes in Nick's cube atm and that would be a very powerful option against them, but not a card that was really correct to maindeck enough to be auto include, hence a great sideboard card, but one that's flexible enough to get played enough to justify its slot unlike something like the Blasts or Chill or Boil etc
Re-introducing an old mechanic in an EDH deck will likely move the needle on one or two specific cards from a specific block, but have the good old days of the printing of Teysa Karlov making people realize Massacre Wurm is broken passed us by
However, this powerful character moment was an original inclusion in localized versions of FF4
I also like to keep a mental note of -5 cards when I side out the KCS package, having the possibility of siding 5 cards
Commaner | Jason Alt Commander (1) 1 Samut, Voice of Dissent] Creatures (29) 1 Avacyn's Pilgrim 1 Avenger of Zendikar 1 Birds of Paradise 1 Bloom Tender 1 Captain Sisay 1 Craterhoof Behemoth 1 Dwarven Miner 1 Elesh Norn, Grand Cenobite 1 Elvish Piper 1 Gisela, Blade of Goldnight 1 Godsire 1 Intrepid Hero 1 Karametra, God of Harvests 1 Kiki-Jiki, Mirror Breaker 1 Knotvine Mystic 1 Krenko, Mob Boss 1 Mother of Runes 1 Rhys the Redeemed 1 Selvala, Explorer Returned 1 Selvala, Heart of the Wilds 1 Shaman of Forgotten Ways 1 Sigarda, Heron's Grace 1 Somberwald Sage 1 Sun Titan 1 Trostani, Selesnya's Voice 1 Viashino Heretic 1 Xenagos, God of Revels 1 Yisan, the Wanderer Bard 1 Zealous Conscripts Instants (4) 1 Beast Within 1 Krosan Grip 1 Path to Exile 1 Swords to Plowshares Sorceries (6) 1 Cultivate 1 Farseek 1 Harmonize 1 Kodama's Reach 1 Rishkar's Expertise 1 Shamanic Revelation Enchantments (14) 1 Anointed Procession 1 Assemble the Legion 1 Aura Shards 1 Awakening Zone 1 Beastmaster Ascension 1 Cathars' Crusade 1 Cryptolith Rite 1 Doubling Season 1 From Beyond 1 Growing Ranks 1 Mirari's Wake 1 Parallel Lives 1 Primal Vigor 1 Seance Artifacts (9) 1 Birthing Pod 1 Boros Signet 1 Chromatic Lantern 1 Gruul Signet 1 Lifecrafter's Bestiary 1 Mimic Vat 1 Selesnya Signet 1 Sol Ring 1 Thousand-Year Elixir Lands (36) 10 Forest 4 Mountain 4 Plains 1 Arid Mesa 1 Canopy Vista 1 Cinder Glade 1 Clifftop Retreat 1 Command Tower 1 Evolving Wilds 1 Jungle Shrine 1 Kessig Wolf Run 1 Rootbound Crag 1 Sacred Foundry 1 Selesnya Sanctuary 1 Stomping Ground 1 Sunpetal Grove 1 Temple Garden 1 Temple of Abandon 1 Temple of Triumph 1 Windswept Heath 1 Wooded Foothills Krenko, Mob Boss
