D&D General Reducing incoming damage: +1 =/= +5%

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I defer to others to work out the math - I teach social studies . However, as a DM who has run several campaigns from 1-20 I have learned to be more careful with magic items that grant an AC bonus.

That is spot on. One of the more desired items in the game for player-characters I've found to be the humble +1 shield.

 

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Lol, it’s 1.87 and rounds to 2

A little less than half as it turns out being half. There's something up with that, but...

Anyway, I believe one, but I don't dislike two. Zero is not ideal, and all is also not ideal.