Numerous times DD Slime effects fail to activate on turn 1 (skill or no skill). Occurs in KC Cup, ranks and against Vagrant/Vagabond. Submitted claims to Kamoney but no fix to date.
I have had similar problems with other cards before, cards just don't work even if you use no skill
This week I found another bug where you can't activate divine wrath the TURN AFTER you set it, you have to wait an extra turn (your opponent's one) to pass to then start getting the prompt of activation