By default, Candy Grapple can take out most enemy threats in the early to midgame, and is costed accordingly
BPhillipYork: Solid midrange Eldrazi, also good commander if you're committing to colorless colorless instead of cool things like 5c colorless (aka Morophon, the Boundless)
Summary Ugin's Labyrinth is a strong land card for accelerating spells and maintaining consistency in your deck - a valuable addition
It is highly synergistic with ST-12, while also offering several popular characters not found in ST-12
Your opponent will want to take him out quickly, but with a Willpower of four, the odds are fairly good that youll be drawing at least one card
Tomb Robber 1 This looks like it should do something useful but I cannot work out what that might be