I realize I've neglected to get Rook all kitted out since he grew up, so I'm asking for some help..?

I need:

Magpie Mask
Magpie Pelt
Swan Antlers

I'm the default deer standing by the Twin God statues
Or I will be the default deer standing by the Twin God statues in a few seconds.

Thanks!

E: Sincere apologies! My game crashed ;-;
ANOTHER E: Thank you everyone that helped!