1) Drenched & Mud: The keywords are in the system, but for Quake "Drench" was missing, so this should be better with the next patch! I'll also try to add a dictionary, so you can look things up really quickly, maybe this also will help.
- Drench: Doubles damage taken by ThunderStrike. Removes Burn.
- Mud: Lowers a card's lacrima values. Reduced by 1 every turn.
2) Lacrima have better stats when they are put on upgraded cards.
3) I'll add a shortcut so you can quickly remove lacrima from a card! In terms of making them bigger, I'll have to think about it.
4) Lacrima only in trash: I agree, I had an idea to use them for sacrifice to gain something else, things like that. It's on my list!
5) Ally cards: Sometimes you get offered upgraded cards. Most of the time you only need to buy cards when you want to get the lacrima they have. I could separate them and offer only cards, and only lacrima separately to purchase. I wanted to update the shop anyway, so I'll think about it. I also just thought about maybe offering cards in the shop with temporary buffs, something like that could be interesting too.
6) Spell usage: Yeah, spells aren't used a lot, and that's okay! There are starter decks where spells are a bit more important. When you run out of creatures, you also need spells as a backup to maybe deal some damage.
Thanks for your feedback, I appreciate it!