How about some quick ways to gain power. Nothing bad ever happened from that! Here’s another spell for Call of Cthulhu, 7th ed.
Shattering Revelation
Cost: 10 magic points; 2D10 Sanity points
Casting time: 1 hour
This spell opens the gate in your mind wide to the cosmos. You begin to see all in front of you. That which you ask for, and that which man was not to know. For every 2 whole points of sanity lost in this spell, you increase your Cthulhu Mythos skill by 1. May the gods have mercy on your soul.
Alternative names: The Dark Tutor, Peering Through the Keyhole, The Madman’s Path
Throat Punch Games 