Patch 3.23

[Edi]

Originally Posted by lch

According to the data, Power of the Spheres and Teaching Sign work exactly the same way, they have the same effect & "damage".

Then the question becomes, since they are different spells, can they be stacked? If not, then the Shugenja is indeed a better prophet than onmyo-ji

[lch]

Originally Posted by Edi

Then the question becomes, since they are different spells, can they be stacked?

Spells buffs work by adding flags to the units. Since those two enable the same flag, I'm pretty sure they won't stack, same as "Iron Will" doesn't stack with "Antimagic". The effect would stack with e.g. a Ring of Wizardry, which uses a different mechanic to raise magic levels.