This is so much better than prayer. Could be ?

You don't seem to have a particular position on whether colors mingle well with their allies, enemies, or a mix of the two. That makes every single card with prayer or like this with color-synergies much harder to remember.

All prayer cards are ultimately going for wedge, be the individual card mono or dual-colored. I was more lax on cards like this and Clever Swordplay where I wanted to add multicolor boons without prayer.