Creatures that tap for special effects, such as Mother of Runes, can be synergistic too, since The Wandering Rescuer makes your tapped creatures have hexproof
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The deck is filled with creatures with powerful ETB effects, such as Palace Jailer and Setzer, Wandering Gambler, to generate tons of value and win the game through a massive boardstate
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Any dual land that you dont have can be replaced by a version that enters tapped and generates the same colors, though Id still focus on those with basic land types so that theyre fetchable
Knights are good at a couple things, generally they like to be equipped with weapons like Embercleave and enchanted by auras