UNDOCUMENTED MECHANICS
Flat damage on top: 1 (+2 per level).
The minion's actual damage is 10% (+10% per level) above the base attack shown.
At skill level 2 the minion gains Stun.
At skill level 3 the minion gains Berserk.
At skill level 4 the minion gains Goatman Frenzy.
At skill level 5 the minion gains Cleave.
The cap follows your Demonic Mastery level: 2 at level 5, 3 at level 10.
0.6s cast delay. Not shown in the tooltip; it caps how often the skill can be cast and is unaffected by faster cast rate.