Blood Barrier

You use some blood and create a barrier of blood that protects you from a certain amount of damage.

Blood Barrier health at starting level: 10

Blood Barrier health at higher levels: add 10 health for each level spell-slot used above 2nd.

Blood Barrier abilities at higher levels: If using a 5th level spell slot to cast this spell the Blood Barrier explodes when destroyed dealing 2d8 necrotic damage to all creatures except for the caster within 10ft. Damage increases by 1d8 every two levels above 5th.