How exactly would I use a Nostalgic Mallarchy Toy?

It does turn pets into the said toy right?

"Take this item and an Essence Of Melody to Vanya's Workshop to change your active pet into a Nostalgic Mallarchy"

From Subetalodge

Oh, thanks!

No probs.

in this very subforum, there's a stickied Frequently Asked questions and answers thread. It has detailed answers for how to color your subetapets, except the newest color, Tempest.

You are welcome to ask us lots of questions, but there's some good stuff in there and it's all succeptible to ctrl+F

Thanks!