Our own Kara Blinebry wrote up a nice deck tech detailing one way you can abuse the power of this commander, so if you love combo killing your high powered Bracket 3 or 4 Commander pod, be sure to check it out
For four mana, you get to put a shadow counter on any creature, making it a Wraith in addition to its other creature types
Creature Elemental When this creature enters, destroy all artifacts and enchantments
Leonin Vanguard is barely passable and a huge liability against Goblin Chainwhirler, with Sacred Cat also barely crossing into the realm of playability
Everyone knows that a key part of a good Commander deck is getting to play your scariest cards as early as possible
Another benefit to blue is that it works really well with artifacts, which are historically one of the best card types in the game