Fixes a few issues with playing cards

Created by: JustSumBody

fixes #10855 (closed) and an unreported issue that would let you bypass the hand's max through using single cards on hands. Also fixes some really funky shit where making a hand places the hand in both your hand slots, so drawing from the deck becomes impossible without dropping the whole thing or placing it back in the deck. Maybe fixes #7338 ? I can't reproduce it at any rate.

My understanding of planes and layers is limited though, so this has the unintended result of making the cards layer above mobs when they're outside of your hand. I was told this usually resets upon being dropped, but I'm not seeing that happen.

Ayy it's fixed now