How do you beat Super Boss fights with no losses?

[DragonBlaster]

I just succeeded killing the Spider with one stack of 7 trolls. I am mage level 27 with 66 mana. I gained 77k experience from the battle!

Spells used:
Calm rage level 2
Stone skin level 3
Fear level 3
Fireball level 3 (1700 damages in center, I don't remember how much Int I have)
Mana Ring level 2

It is just about reaching an hex with only 2 others hexagons in contact. From there I cast Fear on one of the spiders stacks in contact and defend from the other (to accumulate Rage). If the Spider is on one side, I use stone skin and attack it with the trolls. If the Spider is out of reach I Fireball it (which also lower the spiders stacks around, but without killing them otherwise new stronger stacks come in play). All the hexagons are fast full of spiders, but it does not matter. When the spider is dead, I finish off the stacks one by one with Calm Rage giving always some mana. The only problem is the poisonous spiders, but some Fireballs can lower the stacks under 300, which the Trolls can handle.

7 trolls, no loss! With a full army I lost 54 assassins 5 trolls and 60 barbarians. Enjoy the one stack army in Mage