Sorry for my mistake, i meant to point to the ministers and confused them with the Celestial Masters...
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Currently Playing:
Megamek (latest dev version with home-made random campaign generator), Dominions 3 (with CBM) and Sins of a Solar Empire (heavily modded)
Geomancers + Bad luck its what ive used. The falchion + Shield infantry plus a communion of geomancers is enough.
If you take good scales you can pull several of this attack groups.
That would cost you zero gems expense.