H: Mox Opal W: Aether Vial (Modern Merfolk too!)

Hey all,
I've got a Mox Opal that I'm looking to swap for some core Modern Merfolk cards in particular.

I'm more than happy to "trade down" into multiple lower value cards, provided that you offer up a little bit extra in value.

If you're interested, PM me or set up a trade offer!

Thanks!