The Artifacts While almost every deck would be better with a Sol Ring than without it, lets focus on what youre actually trying to do here: you have three Equipment intended to keep your Commander from being targeted and two combo-ish cards
Molt Tender Rating: 3/10 Without graveyard synergies, this is a mana dork every other turn, which seems decisively mediocre
If not, Id rather be running the instant-speed 1-mana blink spells
This is a great value card that works well in black or Dimir steal decks, but I think is better as an on-curve four-drop than as your actual commander
Spot removal like Beast Within, Swords to Plowshares, Vindicate, Mire in Misery, Cryptic Command, Decimate, and Abrade is also helpful for a more surgical approach to problems at the table