Summon skill summons the spirits of great sorcerers of the past. They assist you same as pets dealing damage to monsters for 5 seconds and then vanish.
Skill level 1: Summons one spirit, which deals 20% of maximum damage that your sorcerer can deal.
Skill level 2: Durability of Summoned spirit increases from 5 to 10 seconds.
Skill level 3: Damage which spirit delas increase from 20% to 30% of max damage tat character can deal.
Skill level 4: When spirit vanishes it casts magical explosion which deals damage to nearest NPC's.
Skill level 5: Character now can summon 2 spirits.