These are staples in most formats theyre in
That means the overall card has a red and white colour identity, so can only be used with Commanders that have red and white in their colour identity (Boros, Mardu, Naya, or Jeskai)
Not Trinisphere, which is one of the best artifacts you can keep in your sideboard to tutor up with Karn, the Great Creator in various flavors and formats of Tron decks, which harness the mana generation power of Urza's Mine, Urza's Power Plant, Urza's Tower, and baby of the bunch Urza's Workshop when it's legal
2 Knight Exemplar Knight Exemplar: It is not a legend
Illustrated by Nils Hamm Standard Not Legal Alchemy Not Legal Pioneer Not Legal Historic Not Legal Modern Legal Brawl Not Legal Legacy Legal Comp
Prizes: One Azurite Sea booster pack per match win