mtg all sliver cards Spectral [Premium Deck Series: Slivers] All Sliver creatures get +1/+1. SLIVER Legion Commander Deck Slivers

Im not sure about Doom Whisperer

Ive not yet cast Travel Through Caradhras so Im very curious to see how it plays

As long as you aren't running a Stax deck that is actively limiting your opponents from casting multiple spells per turn with cards like Winter Orb I think you'll get enough value out of Mangara to justify its slot

You get some tempo with that trade and you would otherwise have lost to the card Karn deals with

Mox Opal by Volkan Baga Mox Opal | Illustration by Volkan Baga Mox is a loaded term in Magic

If these are a little beyond your budget, you may be able to actually afford some expensive basics, perhaps