Poof!

"An innocent young Cleffa approaches you endearingly and gives you a hug-squishle. After handing you a basket of various rare berries, she uses metronome. But, the poor dear can not yet control it. It becomes transform, but the spell zips to you first! The last Pokemon you saw before her is now the Pokemon you have become! What will you look like?"

I last saw a Cyndaquil on my dash.

(I wore off the transform by ramming myself into a wall and then fainting. It's all good.)