Hi,
Bloodthirst and Vampiric Master
there seems to be an error when the traits Bloodthirst and Vampiric Master from the “Blood Magic” trait line are both active. The displayed siphoned health in the minion skills description and “Vampiric Master” trait description is reduced by 20% instead of increased.
I tested with all the minion skills and the health siphoned is actually increased, so it seems to be only a bug in the description.
Training of the master
The damage increase is not reflected to the description in the minion skills, but after some testings the damage bonus is granted to the minions, so it seems to be only a bug in the description.
I hope this helps.