Casting flaming arrows

[K]

Thrawn said:
He's casting communion master himself, and the other celestial masters are casting communion slave (ie, no matrixes). He's trying to do it in Round 2, the order of spells is something like:

Communion Master - Flaming Arrows - Pillar of Fire - Pillar of Fire - Pillar of Fire - Cast spells

Perhaps this is the key? "The computer will often refuse to cast spells costing gems if it considers the opposition too feeble." - K

I have probably close to 150 archers in that one battle group. Is there a limitation on the number of archers you can cast with it? a balancing thing?

Ok, cast Communion Master on turn 2, then cast Flaming Arrows on turn 3. This is because any mage that casts Communion Master MUST cast it after the guys casting Communion Slave if you want your Master to get the effect (you can do this in a single turn if the Communion Master mage is below your slaves on your army screen).

Second, the computer won't cast Flaming Arrows if your enemy is very weak. So, if you have 150 troops and the enemy you are fighting has like 20 troops, the chances are good that your mages won't cast any spells costing gems.