Fortifying with blood

The bloodknight strengthens his resilience against all other forms of magic. During the duration of the spell, non-damaging casts can't affect the knight while damaging spells deal less damage. To the eyes of others, he gains a inconspicuous dark-red cloud around him which fends off spells.

Tier 1:
Costs: 27 Blood
Casting time: 5 minutes
Effect: No non-damaging spell can affect the knight. All damaging spells deal -5 damage.
Duration: 15 minutes
Target: self
Tier 2:
Costs: 26 blood
Casting time: 5 minutes
Effect: No non-damaging spell can affect the knight. All damaging spells deal -10 damage.
Duration: 20 minutes
Target: self
Tier 3:
Costs: 30 blood
Casting time: 1 round
Effect: No non-damaging spell can affect the knight. All damaging spells deal half damage.
Duration: 25 minutes
Target: self