I still run it because I find that red can use the discard a lot these days. However, it is likely my worst red card and I'm not sure it's necessary. I just don't have anything I'm dying to replace it with either. So, pretty much the definition of a filler card.
Cheers,
rant
My Cube
CubeCobra: https://cubecobra.com/cube/overview/5f5d0310ed602310515d4c32
Cube Tutor: http://cubetutor.com/viewcube/1963
Cheers,
rant
My Cube
CubeCobra: https://cubecobra.com/cube/overview/5f5d0310ed602310515d4c32
Cube Tutor: http://cubetutor.com/viewcube/1963