How to get the legendary ghost calling skill book? detailed

1 skills. LV 1 was bought in the store.

LV2' s was bought at the Treasure of the Gods.

In Rainbow Valley, you can play a superb group attack skill book.

You can also buy a treasure chest to open the summoner's scrolls, collect ten pieces and open an LV2 skill book at random.

Open a card with a wishing symbol, and the chances of writing a constellation skill book are very small.