Battle Couple

Prerequisite: Two characters must take this feat at the same time

You've had so much experience fighting side by side with your companion, it's like you can predict what they are going to do. As a result, you gain the following benefits.

• Your two characters can fight from the same space, and gain a +1 to attacks while doing so.
• When you are within 10 feet of your partner and they successfully make an attack on their turn, you can use your reaction to make an attack against an enemy within range.
• When you are within 10 feet of each other and are both required to make a saving throw against an area effect, if only one of you passes and the other failed, the one that failed may add the other's modifier in addition to their save.