Kaboom! Nooooooo!

[Taqwus]

There's nothing quite like leisurely amassing a Communion-abuse army, led by a few master mages and with a bunch of theurg and shaman communicants, watching them rout the enemy in a trivial battle... then seeing a Communion Master cast Phoenix Pyre, somehow die (hm, do fire shields or Phoenix Pyre do heat damage to neighbors?) setting off a series of explosions that wipe out 12 commanders and 30+ units. I might suggest that Phoenix Pyre not be cast unless scripted or neighbors in the WIDE area of effect are immune (does fire immunity cover it?).