Talk:Jack the Ripper/@comment-67.160.34.79-20160105024357/@comment-1411936-20160105031237

The latter. For almost all effects like this that are tied to the NP (e.g. Gilgamesh's Anti-Servant or Nobu's Anti-Riding), it's almost always a multiplier.

1200% + (50% of 1200%) = 1800%