The magic system in Heroes V [Discussion]

Stone Skin. 6 mana points. Increases the defense of the selected unit. Spell Power increases the duration of the spell.
Holy Word. 11 MP. Deals direct damage to Undead and Devils.
Blessing. 4 MP. The unit deals maximum damage.
Prayer. 0 MP. Increases the unit's damage and maximum health.
Bravery. 0 MP. No data on effect.
No icon. Haste. Increases the unit's speed and initiative.
No icon. Resurrection. Resurrects a number of fallen warriors depending on the caster's Spell Power.