If youre built around artifacts, a cheap one that cantrips is definitely something Id be after
Legendary Creature - Human Noble Evasion (CTRL to add secondary) Land Land (CTRL to add secondary) Proliferate Sword of Truth and Justice Equipped creature gets +2/+2 and has protection from white and from blue
Even better if you can cheat it into play early in the game or have it enter the battlefield multiple times to get as many tokens as possible
I like stuff like Karmic Guide or Sun Titan for pure value, but you could also lean toward things like Angel of Despair, from above, or Nekrataal or something big like Avacyn, Angel of Hope or another forceful beater
This is where the best Angel commanders in MTG shine, because they help you stabilize, rebuild, and finish without running out of gas
Used in conjunction with creatures that have regenerate, or ones that you can play from the graveyard, this card can effectively destroy your opponent from round three