Let me tell you about a funny thing. Horde mode. In it, as everywhere else, there are various very tasty cards. They give where 25, where 30, and where as much as 50% to something. Beauty! And among all the cards there is one small, almost imperceptible one. Backpack Check.
The average price of it, as it is easy to calculate 15 / 0.05813 = 258 crystals. Considering that the horde sessions by this time last 5-7 months - almost free :) At the same time, each such card allows us to equip one additional thing. And here's what things are at this level. This is what accumulated during the time I was testing this idea and writing this text :)
Each Mystical Card increases damage, health and bone gain by 1.1 times. Total 1.1 to the power of 13 = 3.45. 345%! Against 25-50 for other cards :) And at the same time, we do not forget that things, among other things, also give an effect, in particular, the specified Fire Orb gives 80% Crit Damage, which doubles the damage with a crit of 160%, plus we do not forget about 200+ attacks. A little, but also a plus to the damage.
Here is such a funny card. I don't understand why we need something else :)