Everything in the Swell the Host 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 a creature you control with power 2 or less enters, you get an experience counter. At the beginning of combat on your turn, put X +1/+1 counters on another target creature you control, where X is the number of experience counters you have.
At today's prices the singles come to $91.81, carried by Caller of the Claw ($13.86), Command Beacon ($9.68), Arachnogenesis ($8.17). 15 of the 100 cards are new to this deck. Draftsim's Commander 2015 review covers whether it is worth the sticker price.