Raging bards would be pretty dangerous actually - imagine the flip rate.
Just to give an update on the game that started this whole thread, I've played a bunch more turns and now have Groves and hence Druids. Pentarch seems to have blinked; the armageddon counter has stopped at 42, giving us breathing room to get Life magic and start beating back the hell terrain.
I decided to go after the barbarian lich. I built a huge stack of doom to attack the lichlord, containing Gilden the elven archer (fully promoted), the Baron (not very highly promoted), Bambur (super-promoted), several macemen and Kilmorph soldiers, two druids and their treants, and a priest of Kilmorph with spiritual hammer. More importantly, I had Moe the Hill Giant to bombard the walls.
We approached the gates of the city and lay siege. Every turn the lich was summoning two earth elementals, but I kept the druids casting entangle to avoid any serious counterattacks. The heroes could kill elementals if they dared to step out of the city. After the walls were down, my army charged in and attacked. We crushed four elementals, four orcish axemen, a wolf rider, and a chariot. Most of my supporting army was destroyed, but much to my amazement, no heroes had died; Moe even won a 21% attack on the chariot! I had lost one of my valuable druids, but the moment of truth was upon us -- Gilden Silveric, Elf Hero, had only to attack the lich and slay him... he charged and... retreated, too afraid to attack! AAAH!
The next turn we realized we would never be able to survive. Two more elementals had shown up and one had attacked Gilden, who lived but was wounded. The other killed Moe. We ran as fast as we could, summoning a treant who died the next turn, but Gilden, Bambur and the Baron had escaped to fight another day, along with my last druid.
Seething, we set about rebuilding. Without Moe, we knew if we were to kill the lich we would need to do it quickly. Fortunately, the Baron was up to movement of 4, and my two other druids had arrived, along with other reinforcements from the rear. Several years later, we marched again, with the baron leading the charge. Surprise was our weapon. Our fastest units charged the city, with the Baron attacking to kill the only defender besides the lich. The rest of the heroes attacked next turn, killing the two elementals. My druids were too afraid to attack, but luck was in our favor -- Gilden attacked and gave his life, but it was enough damage that the Baron, even wounded, could take the city.
A major turning point had passed. We claimed more barbarian cities, and suddenly turned on the clan, taking many of their weakly-defended cities and spreading the Runes of Kilmorph. That's where we stand; only the dragon remains on our continent as a serious enemy.
Pentarch better beware.