Summoning allows the user to summon aid in the form of minions, buff those minions, support spells and low direct single target damage. (To be clear the damaging spells themselves, i.e. dimension bolt, are what i mean by low direct single target damage, the caster themselves don't do much damage compared to their minions.) All Tiers - Summons gain +10% extra Vitality, Damage, Physical Armor and Magical Armor.