Even though I could intervene in this causality, such intervention is different from the "capture" I wanted to achieve. I could only manage to "burn it away."
For this battle, that would be a result with no benefit.
It's important to know that Shadow Swapping Monster's "Shadow Swap" and Undying Monster's "Damage Transfer" have a decisive difference.
Both can transfer the bad causality that happens to themselves onto their clones, but the Damage Transfer superpower outsources the bad causality to a distant clone, while the passively triggered Shadow Swap superpower leaves the bad causality in place, and the original body makes a strategic retreat by altering the causal relationship, letting the clone bear the remaining bad causality.
In other words, the intangible, abstract thing that I'm sensing, escaping right now, doesn't symbolize "the fatal injury I caused to the Shadow Swapping Monster," but rather "the Shadow Swapping Monster itself."