As a stretch goal, I’m thinking about a Magic: The Gathering and Pokemon hybrid. The player will control a priest avatar and will become familiar with spirits – saints, angels, gods, etc – in order to channel them against the clerics of competing deities. I’m thinking that witches could act as a kind of creep character, since witches have less power than the angels. [Malleus Maleficarum, Q.1 P.1] More realistically, I’m hoping to make a Missile Defense analog with a textural or thematic upgrade. Right now, I’m studying for a career change, so I’m hoping I’ll have enough time to do either!
20: A man, or woman, in whom there is a pythonical or divining spirit dying, let them die: they shall stone them. 
Our Druid friends were devoted students. They studied for decades, learning the oral traditions of their societies, their magic, their astrology. In Gaul, Caesar observed many Druid seminaries. These druids supposedly had the power to render themselves invisible, to cause death via magic spells, and to produce an enchanted sleep. It was an ancient attempt at using what today would be called nonlethal and stealth technologies. [The Psychic Battlefield , W. Adam Mandelbaum, pg. 20 ]
Just to be clear, this isn’t a stealth game. I’m not copying @McCarthy. It’s a game about priests, some of whom can channel magical forces in order to become invisible.
I will abide in your tabernacle for ever: I will trust in the covert of your wings. Selah. abide. Psalm 61:7
And these things, brethren, I have in a figure transferred to myself and to Apollos for your sakes; that ye might learn in us not to think of men above that which is written, that no one of you be puffed up for one against another. For who maketh thee to differ from another? and what has thou that thou didst not receive? now if you didst receive it, why doest thou glory, as if thou hadst not received it?
