Divination Prayer

I (choose these runes/place these cards/cast these coins/ect.) to know what is, and, from that, what will be.
May this small thing be a true reflection of the great thing,
so that, by understanding this, I might understand that.
God(s)/Goddess(es) of prophecy, (or specific deities)
may I read correctly what I am shown.
I ask your help in seeing only what is true,
not just what I want to see.