You are the ultimate defender. Due to your sheer reaction speed and need to defend, you decrease the likelihood of your allies being hit while they are near you. When a creature within 5 ft of you is about to be hit you can use your reaction to increase their AC by 2 till the beginning of my your next turn. This increases to 3 at lvl 10, 4 at 15, and 5 at lvl 20.
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