You can get a lot of these for invading purposes.
So what level do I have to reach to buy spells. I am feeling the previous respnose.."can be used to equip during invasions." I have an army of 25. Ans I only started winning invasions once I collected magic spells. I have 11. Two of them are deadly strikes! They are helping me right now~
if you reach battle rank 9 you can buy champions aura and also at battle rank18 you can unlock royal seal, other then that you can get magic bolts from the demi quest if you really need spells. You can also use battle hearts to get deadly strike or invulnerability. you can also get hero's resolve from a mystery gift. You can get more spells from monster loot which IMO is very nice to do :)
there is no way to buy spells, u can only get from loot
They aren't so bad, 2000 battle hearts totals 10 of them for a total of 20/10 if you're short on magic it's better than one Invunerability 5/5
Thats what i thought, its better than any other option with battle hearts.
for 25000 u get Chase (20/16) level 4 same if make 125 Deadly strike (500/125) for an army of 200 its great advantage
Deadly strike is much better than chase when u got big army.
i suggest you guys go for champions aura and save up for invulnerability since money is auto generated every hour and battle hearts are only obtainable through means of siege so champions aura for me is very a considerate approach to fill your army with spells for awhile :)