I couldn't resist the name, given that the two legendary creatures' names begin with J and G. Anyway, this is a pretty pure B/G beatdown deck. I included Elixir of Immortality in order to manage the possibility of running out of cards due to having a Splinterfright or two in play. Glissa can help get one back in a pinch. While there is a lot at the bottom of the curve, I took this as an opportunity to take more land that enters play tapped than I usually do, figuring it gives me not only the flexibility to get the bigger stuff later, but to power through things in turns 2 and 3 with multiple plays. The deck is quite cheap, averaging 2.10 on a 15/13/5/4/2 curve (39 non-land).