Well, I thought of the growing problem that the shield creates with the attack power of enemy creatures, so I wanted to think of a way to combat this. The best idea that I came up with is to keep the current shield idea, and add the ability occasionally (either a percentage, or use a formula based on the creature's attack) antimatter the attacking creature. I am not sure how this would effect balancing of the card, or what the percentages or formulas would be at this time.