Heart of Stone

- When a creature within your reach misses you with a melee attack, you can make an opportunity attack against that creature.
- At lvl 5, you get the ability to use your action to enter a defensive stance until the start of your next turn. While in this stance, you make opportunity attacks without using your reaction.
- At lvl 13, you can enter your stance as a bonus action.
- At lvl 17. while in your defensive stance, when a creature makes an attack roll against an ally within your melee reach, and the roll exceeds the ally's AC but is lower than yours, you can choose to redirect the attack to yourself. When you do so, you are hit automatically and any on-hit effects apply to you as normal.