Everything in the Plunder the Graves Commander deck: all 100 cards with current prices, what the deck is worth against the sealed price, the 15 new cards, and whether it is worth buying.
Whenever another creature you control dies, you get an experience counter. At the beginning of your end step, choose target creature card in your graveyard. If that card's mana value is less than or equal to the number of experience counters you have, return it to the battlefield. Otherwise, put it into your hand.
At today's prices the singles come to $93.27, carried by Pathbreaker Ibex ($19.22), Eldrazi Monument ($9.95), Skullclamp ($7.50). 15 of the 100 cards are new to this deck. Draftsim's Commander 2015 review covers whether it is worth the sticker price.