Spikes

[Sunrise Samurai]

All orc buildings that don't shoot (anything but volcano and stone shelter) gain 20 power. They don't get any actions though, so it translates to a nasty counterattack only. This doesn't make them any harder to destroy, just more painful.

[Puss_in_Boots]

It may not be a good idea to give all orcish buildings 10 damage in counter attack.

Might start with 6 damage just to get 3 counter damage in their, I wouldn't want the elven walls to be weaker than regular orc buildings. Then we can give them longer spikes, so that it reaches long enough that they get first strike.

[Sunrise Samurai]

I was just going to suggest something​ for elf wall, actually. Let's go with 10 attack (5 counter) and a second upgrade for first strike.

[Alexander82]

Elven wall will be revised as well.