With Cabal Coffers and similar cards in Black, six mana is easily done, and this is just one more mana than the commonly printed Control Magic like Mind Control and Persuasion
Tears of unbridled joy trickled down Samut's face

Ishizu Tearlaments, 1 Purrely Ishizu Tearlaments) 75 Branded (52 Branded, 23 Grass Branded) 74 Rescue-ACE (73 Rescue-ACE, 1 Infernoble Knight Rescue-ACE) 73 Runick (69 Runick, 3 Naturia Runick, 1 Bystial Invoked Vanquish Soul Runick) 61 Vanquish Soul (60 Vanquish Soul, 1 Kashtira Vanquish Soul) 58 Labrynth (29 Labrynth, 19 Ishizu Labrynth, 5 Ishizu Unchained Labrynth, 4 Ishizu Tour Guide Labrynth, 1 Ishizu Tearlaments Labrynth) 28 Dragon Link (20 Bystial Dragon Link, 8 Grass Bystial Dragon Link) 24 Exosister 18 Magician 17 Mannadium (12 Scareclaw Mannadium, 2 Bystial Scareclaw Mannadium, 2 Kashtira Scareclaw Mannadium, 1 Scareclaw Mannadium FTK) 16 Rikka (11 Sunavalon Rikka, 4 Rikka, 1 Therion Sunavalon Rikka) 16 Sky Striker (14 Sky Striker, 1 Invoked Sky Striker, 1 Spellbook Sky Striker) 15 Scareclaw (8 Scareclaw, 6 Kashtira Scareclaw, 1 Adventurer Kashtira Scareclaw) 15 Unchained (12 Unchained, 2 EvilTwin Unchained, 1 Labrynth Unchained) 11 Mathmech @Ignister 11 Salamangreat (6 Salamangreat, 5 Mathmech Salamangreat) 11 Synchron (8 Adventurer Synchron, 1 Synchron, 1 Bystial Adventurer Synchron, 1 Superheavy Samurai Adventurer Synchron) 10 Dinosaur 10 Tri-Brigade (9 Spright Tri-Brigade, 1 Scareclaw Tri-Brigade) 9 Blackwing 9 Floowandereeze 8 HERO 8 Swordsoul (7 Tenyi Swordsoul, 1 Swordsoul) 8 Vaylantz 7 Traptrix 6 Infernoble Knight (4 Adventurer Infernoble Knight, 2 Infernoble Knight) 6 Mikanko 6 Phantom Knights (2 Mikanko Phantom Knights, 2 P.U.N.K

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Mewtwo#20 Holo $388.85 Mewtwo#20 Holo $388.85 iWe may earn a commission from qualifying purchases through affiliate links at no extra cost to you
If any card is popular in Legacy, then this is the only way to get them - barring of course a reprint in treasure chests, which again may have possible IP issues long-term