Defender

You learn to protect your allies from the tides of battle, you gain the following benefits:

• Your constitution score increases by 1 to a maximum of 20.
• When an ally you can see within 5 feet of you is the target of a creature's attack roll, you can use your reaction to leap in between your ally and the enemy as long as you or target ally are not prone, grappled, or restrained. You move into the space of your ally and push them into an unoccupied space within 5 feet. If no such space is available, they fall prone in the same space as you. Neither your movement nor your ally's count against your total movement or provoke opportunity attacks. This makes you the new target of the attack.