Very short question on Communion Master and the slave matrix

[mivayan]

The game does not indicate in any way at all how much power your mage get from the communion. The only way to tell is that he might cast spells he could not cast before.

Remember that you can script spells that are greyed out because you dont have enough skill. For example you can script communion master,smite,smite,smite,smite on a pythium arch-theurg (who only has holy4), and if you bring at least two communicants he will cast the smite.