I had one against Nommo run to round 150, when I surrendered. He had regrowthed Whirlpools immobilizing all of my cards, and my deck had no direct damage or speed. I stacked Weaken Will and Fortify to the point where I was shielded for upwards of 300 damage. I have a screenshot of about halfway through the match; I’ll go get it.
The picture’s huge. Just follow the link.