From the official release announcement:
"A sanguine moon stains a canvas of stars as two figures utter an ancient oath, swearing allegiance. They murmur the final words. Bloody light surges from their bodies Power courses through transformed veins as masks materialize in their hands. Thresh and Elise embrace the Blood Moon.
"Join the ranks of an ancient sect with Blood Moon Elise and Blood Moon Thresh, available now in the League of Legends store for 975 RP each. You can also grab the Blood Moon icon for 250 RP.
Alternatively, snag all five Blood Moon skins plus the icon in the Blood Moon Bundle for 20% off at 3920 RP (7524 RP if you need the champs) until 23:59 PST on January 12."
Blood Moon Elise
Blood Moon Thresh
Blood Moon Summoner IconAs mentioned above, the new Blood Moon Summoner icon is also now available for 250 RP.
Blood Moon Bundle
Through January 12th, you can also snag the Blood Moon Bundle!
At 7524 RP for everything and 3920 RP for the skins, this limited time bundle includes all five champions, their Blood Moon skins, and the new Blood Moonsummoner icon!
For those who already own everything except the two new Elise and Thresh skins and the new icon, the bundle will run a discounted 1760 RP rather than 2200 RP :)