Its not a bad strategy, but there are definitely better ways to build both a knight EDH deck and a deck focused around Balan, Wandering Knight
Should your opponent get especially reactive post-sideboard with Days Undoing, Learn from the Past, or a stack of countermagic, it might be worth considering bringing in your own Clash of Wills, as your life total is less likely to be under pressure with their configuration
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Prosper, Tome-Bound, currently sitting at around $15 for its original Forgotten Realms printing, is one of the best ramp commanders and extremely popular in casual pods
If youve already amassed a decent board state, this is likely enough to push you over the top in nearly any game