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Blue White control using Heroic creatures and Nivmagus Elemental to swing for death.
Control opponent and cipher Hidden Strings on a creature. Every time you do damage with ciphered creature, cast copy of Hidden Strings targeting Heroic creatures giving them +1/+1 counters. Before that spell resolves, while Hidden Strings is on the stack, exile Hidden Strings using Nivmagus Elemental granting him two +1/+1 counters. Swing for death :)
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