Hey, Phyrexian Metamorph is just a Clone effect that can also copy an artifact for 4 mana
Before we can digest the card, theres the incredible Anna Steinbauer artwork (jeez, shes always so good check out that projectile hole in the mist fired by a desperate victim)
Ok Basil - Disguised Detective [Foil] #91 (Lorcana Azurite Sea) Details All prices are the current market price
1 generic, 2 Phyrexian white, Sacrifice two other artifacts and/or creatures: Put an indestructible counter on Mondrak, Glory Dominus
Selvala can then take all your stored-up green mana and double it while at the same time doubling Omnaths power in the process
Bubble Snare, Capture Sphere, Castaways Despair, Charmed Sleep, Claustrophobia, and others usually cost three or four mana, and tap down a creature and keep it tapped down