He's a Tiefling Warlock with a Pact of the Tome, although his exact patron is unknown
It's also important to note that if you have two Alices on board, they give each other Support, so you can quest for 5 with the first one and then give her Strength to the second so she can quest for 5 lore as well
Before we start going over what makes a good commander, lets first understand the concept of color identity
Poking around a bit, I found quite a few graded cards posted on eBay, and while sellers were asking higher-than-average prices for those cards, one thing seemed pretty obvious: The newer a Magic card is, the less likely grading it will have a significant effect on its value
Nasty, since now your stuff can trade with anything they damage as well as double the life swing with lifelink
So yeah, that's one giant turtle, but is it actually any good