[atlatea]

I agree, use helplesness, it's the best spells againts all lv 5 (except those that have magic immunity), not just ogre.

General things againts ogre, you must have more than initiative than them, which force you to resort on 2 things, either you take warrior onslaught skill or choosing unit with high initiative.

Here is another add from me, another alternative is you don't want to use full of your unit and just use red dragons, using your unit composition you'll have easier time if you use red dragon, i really mean it because you go againts 5 stack of ogres, and your unit composition will be torn apart by them, your problem is on the inquisitor, rune mage and royal thorn, ogre will surely drain them in turn 1, and they are very squishy, which means they will be ripped apart with ease in turn 1, and your red dragon won't do much because ogre passive abilities is doing 150% more damage to flyer, and your red dragon is a flyer and by draining inq/rune/royal they can also rip your red dragon with ease in turn 1 , only your paladin offer the best chance to win in this scenario.

Though if you choose to use only red dragon, you need sufficient lv of mana accelerator, poison skull lv 3, onslaught and adrenaline skill though. You can choose beetwen onslaught or adrenaline, but i recommend taking both. Also consider blue dragon pet, he has +1 initiative bonus.

Also if you care about game time, this strategy is not recomended, because there is no nearby castle to store your units in goblin island if i remembered right unless you don't care about game time or you care about game time and prepared enough to dismiss your units which is really crazy if you ask me (though maybe not in normal difficulty because you have insane amount of gold in normal difficulty).

Ok, here is the strategy, take that onstlaught and adrenaline, lv both of them to lv 3 (adrenaline is the first priority), consider taking caution 3 too. My paladin always have adrenaline 3, onslaught 3 and caution 3, it's best againts ogre and archdemon, especially archdemon, and it seems that this caution reduce archdemon halving damage, so it won't be 50% of your total stack hp, instead it will be just 35% (CMIIW). Holy armor special skill also seems to do the same as caution.

Red dragon will have higher initiative than ogre via adrenaline 3 (+onslaught 3 if you have), cast poison skull lv 3 on each of them (from the most dangerous stack to the least one). Remember don't wait or you'll be drained, either defend, move (use all your action points) or use fire flood, if they're close to your red dragons, just run (use all your action points)/run then fire flood. They won't be able to drain you nor they will be able to reach you because of adrenaline 3, because adrenaline 3 will give your red dragon +2 initiative and +2 speed, which means your red dragon will have 8 initiative (9 initiative if you have blue pet dragon) and 9 speed.

Honestly, there is no need for onslaught if you just use red dragons, however i still recommend taking onslaught 3.

If you have caution 3 and holy armor 3, a couple of errors is allowed, meaning your red dragons got hit by them.

And if you have resurrection 3, many errors is allowed, because you accept loses. With this resurrection 3, your casualties on your red dragons will be counted as loses in the final score, however your dead red dragon will be 100% resurrected. Up to you though.