When it comes to judging the Commander 2016 decks by the value of their mana, we have a similar scenario to total value, with three decks in the top tier and then another two decks lagging far behind
Creature - Devil Nightshade Assassin First strike When this creature enters, you may reveal X black cards in your hand
The end result is that The Ur-Dragon plays a "fair" game of Magic, winning all sorts of ways with lots of variety, while Scion of the Ur-Dragon is a hyper-consistent "unfair" deck looking to 1-shot opponents, combo off, or cheat tons of Dragons on to the battlefield
This means you could spend the mana to activate an ability of an artifact you control or an artifact card in your hand or graveyard, for example
Essentially, this card means every permanent spell cast makes one of your creatures bigger, producing a rapidly escalating threat
In games where you dont draw Violent Outburst, jamming Oko, Thief of Crowns can help you pull ahead