Hi thanks for the feedback, if you hover over the skills you can see what they are capable of. Some of the things you listed already exist in the game.
The Warrior has a skill that empowers the damage for everyone for one turn. The Mage has a skill that increases his next spell by 300% The Second Enemy eats one of the numbers which prevents you from using specific spells The Third Enemy Casts reflect and Speeds up the countdown timer so it goes really fast.
I appreciate the review and sorry that these were not obvious for you when playing but a lot of what you mentioned are already in the game. Thanks for playing though I appreciate it :)