Created card limit

I use chizuru nine and Cassius. And my chizuru uses the multi hit skill sword of the moon. Now. If my chizuru hit the enemy with like 13 stacks or more of moon+ together with the skill that allows you to create 4 shadow stacks per hit. The game will treat that as I'm creating cards. Now that's fine. But the game will limit the stacking to 5times per turn. Then it will stop. The frustrating thing is. The remaining stacks will carry over the next turn. The next turn the game will say: uh oh.no cards for you, say bye bye to your nine's hew. And the hew skill card is gone for the rest of the boss fight. Please did this thank you