Keep a track of the casualties infliced by the Goredrinker. At the start of the controlling players turn, consult the chart in Codex: Khorne Daemonkin for what effects are bestowed upon the blade (effects are cumulative until model is lost or game ends).
Building an army? Create, validate and share your list with New Recruit, army builder for Warhammer 40,000 7th Edition and many more games.
Try the builder