This strategy (that was put on the page before user strategies were introduced to XuFu's) now officially has me assigned as the creator so here are some words that maybe help to clarify some comments:
First of all, the original strategy was using Infected Squirrel, Unborn Val'kyr, and Scraps, you can see that in some of the comments from 2017. The script was and still is working with this pet combo.
We are not exactly sure what happened, but somehow the Frostwolf Ghostpup replaced Scraps and was mentioned in the strategy steps. This is not my intention so I'm now changing everything back to reflect my original strategy.
So far there are no other Undead pets with Superbark and Claw so you shouldn't experience weird forced swaps, all Val'kyr breeds have higher HP compared to Scraps.