Playing my last couple games I realized that both Piercing Strike and Lingering Dead aren't unit specific or even infantry specific (unless I'm missing something). Does anyone have thoughts on Death Knights with Lingering Dead? Heck, you could even put that on a Carrion Lancer block. Also, combining piercing strike with Oathsworn or Fire Rune could be really cool.

I've used Lingering Dead on Death Knights before. Definitely good in the right situation, but there are usually other training options you want to take.

A local has run Lingering Dead on a 4-tray unit of Carrion Lancers. I was so happy to have reduced his threat at initiative 4 before they attacked, but nope, that worm lingered. They didn't hit back very hard, though, because they were down to one rank, and didn't have Rank Discipline for rerolls.