Since it's a 4-mana non-creature spell, try to build your front line well, keeping in mind that it can also trigger Blue-Red abilities
The Ur-Dragon is a five-color behemoth whose power is felt long before he ever hits the battlefield
For a Challenge-focused deck like this, Resist can make a huge difference
There are a couple of decent questers with high Willpower and high lore value in this deck, like Robin Hood, Daydreamer and Starkey, Devious Pirate, but more often than not you'll get more value out of steadily questing with an unanswered Don Karnage than you will with an intimidating late game bomb
Edward Kenway Edward Kenway can work as a combination assassin/vehicle commander
The main line of play is simple but powerful: develop ink early with Sapphire, then drop mid-to-late-game glimmers that generate Lore more efficiently