How to train your dragon (Upgrade costs)
Upgrading your dragon is the most expensive action in the game but also one of the biggest power upgrades you can get your army. Upgrading both dragon level and its skills is paramount to a strong army. Below you see a table for upgrading dragon skills and further down you will find info on the cost in gold and time for dragon leveling.
Domesticate: Upgrade Dragon Skills / Abilities
In total we need 3 abilities maxed on each dragon. That means 19,325 Dragon Souls x 3 abilities = 57,975 Dragon Souls!
Needless to say, you have to be efficient about your Dragon Soul grind if you want to have any chance of a competitive army. Have a look here for more info on obtaining Dragon Souls and killing Bosses: Combat/dragons/obtain-dragon-soul-crystals/
Upgrade: Level up your Dragon
In total we need almost 300 million gold to max out our Dragon. This is incredibly hard to get whilst also maintaining boosted Immortals (sometimes in multiple marches).
OBS! Holy/shadow dragon is more expensive to level up than the other dragons. Holy/shadow is consistently 1 level more expensive. So lvl 46 is 58 million gold instead of 52 million gold of regular dragons, and so on. Level 50 holy dragon supposedly 70 million gold.
|Level||Gold cost for level up||Upgrade Time Cost|
|Lv 42||42,298,000||24d 21h 17m 51s|
|Lv 38||29,350,000||20d 19h 00m 00s|
|Lv 30||7,729,000||6d 20h 00m 00s|
|Lv 23||1,858,000||3d 08h 00m 00s|
|Lv 21||1,161,000||2d 22h 00m 00s|
|Lv 18||512,400||2d 10h 30m 00s|
|Lv 17||394,400||2d 7h 50m 00s|
|Lv 15||200,000 + 80 souls||1d 12h 00m 00s|
|Lv 13||110,900||1d 4h 00m 00s|
|Lv 8||15,000||12h 00m 00s|
|Lv 6||9,000||8h 00m 00s|
|Lv 5||6,000 + 20 souls||Unknown|
|Lv 2||1,500||2h 00m 00s|