There are two of these (sticking with Double Masters' doubling theme) - the cards Weathered Wayfarer and Bring to Light
A solid red commander and pretty popular in the 99, Purphoros, God of the Forge is a potent, and fairly pricey card: The regular version for the original Theros printing sits around $25, and later premium versions are close to $50
It's an evasive 1/1 that can be put onto the battlefield for free at unexpected times, synergizing wonderfully with Dredge abilities
Most casual players are willing to trade a couple of exiled cards from their library to add another land to their fat stack, and you net cards quite often
It's a Lord and Priest of Titania in one card, but it only taps for your Elves and costs another mana, so it's slower than the Priest in mana made and speed of tapping
The set includes everything needed to play, including a game board, 3D damage counters, and three ready-made decks