I'm asking because I wanna put a wyld elf as kind of halfway to becoming a minotaur. So, she'll first have a tail, then hooves, then the whole she-bang later. Or just make her an elf with a cow's lower half.
If I'm reading the wiki page correctly, it shouldn't. All of the changes that add a Wyld Mark check to see if you already have one and which one it is. The TFs for each mark only seem to fire if you already have that mark or don't have one at all.