This spell is a rank 3 druid spell that is pretty useless. It is very similar to the arcane spell Vampiric Touch. So I suggest maybe it should get the same bonuses with the same appropriate feats?
Vampiric touch has been changed as follows:
Vanilla casting deals only 1d5 damage per 2 levels
1d6 damage per 2 levels for SF: Necromancy (consistent with what it used to be)
1d7 damage per 2 levels for GSF: Necromancy
Vampiric touch has been changed as follows:
Vanilla casting deals only 1d5 damage per 2 levels
1d6 damage per 2 levels for SF: Necromancy (consistent with what it used to be)
1d7 damage per 2 levels for GSF: Necromancy