Soul Siphon

Engineer skill · Overload Line · tier 4

Beta 0.7.2

Every shot tears the enemy's specter out and gives her back her breath.

It has no cooldown: it is always on while it sits on the hero's active bar, and does nothing anywhere else.

Values by rank

Soul Siphon scales with Lifesteal. Its value at each rank is 148 + 42 × rank:

Rank	1	2	3	4	5	6	7	8	9	10
Value	190	232	274	316	358	400	442	484	526	568
Lifesteal	+1.9%	+2.32%	+2.74%	+3.16%	+3.58%	+4%	+4.42%	+4.84%	+5.26%	+5.68%

Lifesteal is a percentage stat, so the value is used as written (in basis points, shown here as a percentage), times the skill power.

Lifesteal = value × skill power
skill power = 1 + 1% per point in the other Overload Line skills + 2% per rank of each skill that boosts it

How to unlock it

1
Rank 5 in Overdrive or Overburden Tier 2 or tier 3 of the Overload Line.
2
Hero level 22 at the earliest There is no level requirement, but a hero gets one skill point every 2 levels.
3
One skill point per rankUp to rank 10.

Rank 5 in Soul Siphon opens Unstable Core.

Mastery and synergies

Line mastery: every point in the other Overload Line skills makes Soul Siphon 1% stronger, up to +40% with all of them at rank 10. Its own points do the same for the rest of the line.

Soul Siphon has no synergies: no skill boosts it and it boosts no other skill.

Overload Line

Skill	Tier	Type	Cooldown	Scales with
Thruster	1	Buff	14 s	Haste
Overdrive	2	Buff	14 s	Haste
Overburden	3	Buff	14 s	Haste
Soul Siphon	4	Sustain	None	Lifesteal
Unstable Core	5	Ultimate	16 s	Haste

Other Engineer skills

Source: closed-beta game client 0.7.2. Data from the closed beta, so values may change at launch.