http://www.gaspowered.com/ds2/patch.php

20647 Leadership, 6 Attack, 12 Defense, 35 Intelligence, 60 Rage 142 Mana. 119/113/215 Runes, 380 Crystals, 998k gold (plus about 30 Black, Red and Emerald dragons stashed away). Battle count 460, killed enemies 360k, casualties 21k, killed 3 bosses. 46% of damage from army, 47% from mage book (ha!), 7% from Spirits of Rage (Z 13, S 11, L 16, R 25).

Most effective creatures : Black Dragons (68), 11.5% ; Demons (summoned), 10.0% ; Royal Snakes (1854), 9.4% ; Cerberi (summoned),7.3% ; Griffins (1700), 7.0% ; Unicorns (909), 5.3% ; Red Dragons (54), 5.3%.

Some quick notes for the powerplayer :

- You want to play mage, if the 47% from spells didn't make it obvious. For the record that grossly understates reality : 47% from direct spells, and the #2 and #4 best troop for damage is also summoned (not taking into account how much damage they soaked up dieing). In general magic carries the game nicely.

- You want 35 Intelligence. Int is useful by 7s (each 7 points give +10% to damage), and I doubt it is possible to obtain 42. That 35 is made out of a Druid Staff (+4, there's the better +5 Archmage staff, but this gives +50% to animals' attack, which includes Dragons) + Feanora (3) + Wizard Hat (1) + Sun Cloak (2) + Old Skull (3) + Ancient Amulet (+4). So 17 off items, 18 native (about 3 or so available off the map), 15 from levelling. So this means you pretty consistently pick Intelligence whenever it is offered levelling up.

- Skillwise you want Destroyer, Higher Magic, Chaos Magic, Wisdom, Concentration, Rage Control, Master of the Spirits, Reserve maxed out. The other skills are irrelevant. Reserve allows you to carry large supplies of units (Like 30 Black, 30 Red Dragons) and replenish your troop as needed. You'll discover that dragons don't take much damage and a set of 2 (later 4) summons carries you through literally any battle. There's no such thing as "Impossible" group for the power mage, I've spent the entire game battling Overpowering, Impossible etc. They're all easy.

- Spellwise you want Demon Portal, Fire Rain, Ice Snake, Poison Skull and Armageddon maxed out. The rest is irrelevant. I did max out Healing and Resurection, but soon enough I discovered I have no actual use for them. Flaming Arrow and Greasy Mist are also useful, especially early on, so you might as well level them up - God knows there's no shortage of Crystal. Necro Call seemed promising but unfortunately it always brings in less army than a summon, so no real place for it. (perhaps on a dragon stack later in the game, but by then it doesn't matter anyway). Pain Mirror might be a good thing to have just in case a huge stack gets lucky and you punish it into the ground. A few words aside for Armageddon : the spell seems like a total waste, especially because it affects your own dragons at full strength in spite of what it claims (35%), and in spite of what they claim (immunity for BD, high resistance for FD), even though the spell is fire. Amusingly enough the same is not true if the oponent casts it. Nevertheless, the final battle is particularly tough (a dozen or so enemy stacks, all level 5). An Armageddon midbattle significantly altered the odds and it is possible I would have been defeated without it. So, keep it just in case.

- You want the Rage Spirits and the Rage to power them. Death is by far the most useful. Soul Draining should be at 20 rage / 30% ; Black Hole at 500-900 dmg and 45 rage. The Rage Draining should be at 5 rage - the cheaper the better. All with rest 1 ideally, or as low as possible. Ice is the second most useful, because of the Chargers (use with summoned Archdemons to get the bonus mana). The rest are pretty much useless.

- You want mana. Lots and lots and lots of mana, and especially mana regen. The game cheats, in the sense that you don't get the regenerations skills promise for as long as the battle lasts, but only a few turns. Thus they have to be supplemented : The Rage Predator (-5 rage + 5 mana each turn) is a must have. The Well of Mana belt I wear in duplicate. This means 6 + 5 + 3 + 3 = 17 mana per turn originally, dropping down to ~11 later on in the battle.

- You want all the rage and mana potions you can get. Buy them all on sight.

- It's a good idea to build up a stash of the scroll versions of spells named above for that one battle when you run out of mana but somehow the opponents aren't all laid to waste just yet.

- It doesn't really matter what army you use. Just as long as there's some meat there to sustain you while summoning all is good.