The one that was first introduced here-

http://forums.spiralknights.com/es/node/115806

I do have energy for a give away though it's mostly been just Zeddy and a couple of others talking and I'm not giving Zeddy energy because he doesn't play the game like at all and I'm aiming more for like, newer knights in T2-3 that would find use for it. But that's beside the point. Never mind, I gave Desiptik 1,000 CE. Congratulations to Desiptik. How lovely.