Need help on Energy Crystals

I have 50 Energy Crystals and i'm about to unlock another slot for my Crystal. Am I gonna need another 50Energy Crys for my Devil's slot or this 50Crys used for every dragon ? getting another 50Crys is ridiculous.......

The 50 crystals only unlocks the 8th slot for one dragon. You also need more crystals to embed a stone in the slot.

lol. that's ridiculous......it took 4 months + magic trade to get up to 50 and should be another 6months for another 50...... hahahaha

I am sure Haypi will change this so people receive them more often but until then you need 50 crystals for each individual dragon to unlock the 8th slot
and you need more in order to embed :l

In additional, 10 Crys for lvl 1 Stone..........

Honestly I played laputa every day, with about 10 coins worth of respins a day and I got 50 to unlock, and 40 to embed in about 3 months.

I played every level, and some days I didnt get any crystals, some days I got 10.

If you dont play though all the levels every day it will take you 9 months to get all the crystals you need.