Is there any way to create a high-level gem that pumps its special ability up substantially but has almost zero damage? What I'm looking for is a Cyan/Blue/Magenta gem that wipes their healing, wipes their armor and slows them down that I can put right next to my mana farm. Right now, whenever I create gems that do this to any substantial degree, they start killing off the creatures that I want to walk through the mana farm. I've read various gem creation recipes, but they all focus on maximizing both specialness and damage.
You could do that at corrupted mana shards... Other players turn the problem: enrage the monsters so high, that neither slow gem nor managem could hurt the monsters and put a kill gem behind