mtg starter commander deck MTG: featuring a powerful legendary commander card designed to control the battlefield with fiery spells and relentless creatures Starter Commander Deck - Draconic

Hearthhull, the Worldseed Hearthhull, the Worldseed offers an exceptionally powerful card draw ability considering that you can sacrifice the land you use to pay the cost and play an additional land to make up for the one you lost

Sengir Vampire set up the idea of what a vampire would be in the game, as a creature that grows from the death and damage it inflicts

The first to do this was none other than Jon Finkel, using the Medallion to cast spells in his Ophidian deck at 1998 US Nationals while keeping counter magic available

However, it should be noted that most MTG tournaments dont allow Mox gems because of their rarity and strength

That said, I dont think that it would compete with any of the Swords that are already legal in Commander