Your unwavering bonds with your allies manifest as a protective aura that shields you from harm. When you cast a spell of 1st level or higher that enhances or protects your allies, you can create a Shield of Fellowship that lasts until you finish a long rest.
The Shield of Fellowship has hit points equal to your class level. Whenever you take damage, the shield absorbs that damage instead. If the damage reduces the shield to 0 hit points, you take any remaining damage.
Shared Resilience: While the shield has 0 hit points, its magic remains dormant. Whenever you cast a spell of 1st level or higher that benefits or heals an ally, the shield regains hit points equal to twice the level of the spell (up to its maximum). Casting a cantrip that targets an ally regains 1 hit point for the shield.
Protective Bond: When a creature you can see within 30 feet takes damage, you can use your reaction to have your Shield of Fellowship absorb the damage instead. If this reduces the shield to 0 hit points, any remaining damage affects the creature.