Boon of Cobra Kai (5e Epic Boon)
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Boon of Cobra Kai
When you hit a creature no more than one size larger than you with an unarmed strike, you can spend 1 ki point to make a Strength (Athletics) check contested by the target’s Strength (Athletics) or Dexterity (Acrobatics) check (the target chooses the ability to use). If you win the contest, you knock the target prone and it is knocked unconscious for 1 minute.