Gatekeeper

Awakened:
''This creature of pure fire and rage does not deserve to find a home on this plane. You shall not allow the primeval forces of elemental evil cross the planar border while you still draw breath. You meditate and focus your will to brace yourself against the flame, and throw all your weight into a shielded tackle against its body inferno.''

Shield, requires attunement
During a short or long rest rest, the shield can grant the wielder resistance to one of the following damage types: Fire, cold, lightning, thunder. You may change the damage type during a short or long rest.