What is it?

After 900+ hours in game, I just spotted my first Gold Dragon and it showed up on a lesser hero summon!! So I was all prepared to do some save scumming because I was putting together a fire team. I had two Fire Wizard lesser heroes already, and a summoned fire sprite. I could't summon baby fire dragons yet. I was determined to get some kind of fire resistant unit(sprite, wizard, phoenix, baby dragon, etc) and on the third try, the Gold Dragon showed up. Never saw one in the game at all, even as an enemy. F...

I've just upgraded my city storage to max and it only allows to store 100 Mithril/Adamantium ores, so, how to forge items which require 250 ores? I know there is a building which flatly adds +5000 to rare ores capacity, but it light years away from my current development state. Is it intended cap? Thanks!...

Using Mrhymns mod, what use are sprites? I can't seem to keep them alive and they do very little damage. I'm sure there is something I'm missing. Would like to hear how others use the various sprites in the game.

What does an extra strike mean? Is it like advantage to hit in D&D? Something else?