The Mana Rig 28 (Commander: Dominaria United)

Whenever you cast a multicolored spell, create a tapped Powerstone token. (It's an artifact with "{T}: Add {C}. This mana can't be spent to cast a nonartifact spell.") {X}{X}{X}, {T}: Look at the top X cards of your library. Put up to two of them into your hand and the rest on the bottom of your library in a random order.

NM - $2.20
LP - $2.20
MP - $2.20
HP - $2.20
DMG - $2.20