Top Definition
The belief in a trench-coat wearing ex-angel Castiel who ate a million souls and became God.

"I'm not an angel anymore. I'm your new God, a better one. So, you will bow down and profess your love to me, your Lord, or I shall destroy you."
I just converted to Castianity
Oh my Cas/Oh my Castiel
I pray to Cas/I pray to Castiel
by Inzey November 04, 2011
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