While its power is usually 0, you can pay 3 mana to make its power equal to the number of towns you control, making it potentially grow big in the right deck
Toxrill, the Corrosive Toxrill, the Corrosive makes a really neat Commander and is part of an epic land-destruction combo
5 Mazirek, Kraul Death Priest Fittingly enough for a Priest, Mazirek rewards you handsomely for offering, or forcing your opponents to offer, tribute in the form of sacrifices
Minwu, White Mage Rating: 7/10 The power of Minwu, White Mage is of course that it enables its own trigger because it has lifelink, which is pretty good
Like other sapphire cards, this give you the ability to look at cards from the top of your deck and decide whether to put them at the top or bottom of your deck