Is it worth to buy w engines from signal shop, or is it generally frowned upon, and more cost effective way is to always get more pulls, and hope whatever you want spooks you eventually?

>>534194112
>>534194198
>>534194521
>>534194014
>damn this boss resists ice and electric I should pick a different tea-
>pick Mibaby and Yanigger
>judgement cut freeze
>EX spam 4 times with Yanagi and trigger disorder for a quadrillion damage
>judgment cut again
Haha unlimited power