Help on spell lesser ritual of chaos

Current upkeeper: Morpher
Casting time    : 33
Spell cost      : 1250
Spell type      : generic
Affecting skills: Demon lore, Summoning mastery
Affecting spells: Lesser ritual of chaos
This lesser ritual allows  a warlock to try  to summon a sword  demon to serve
the warlock. Even though the spell succeeds it doesn't guarantee that a demon
will appear.

Lesser healing sphere < List > Life for my brethren