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Hero Mastery

Lifestealer

An unstoppable hunter carry: Rage grants spell immunity, Feast lifesteals every hit, Open Wounds locks + heals, and Infest sets up surprise ganks.

Pos 1 · Carry (Safe Lane)
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Mastery parameters

Your GPM, last hits and damage per game against other Lifestealer players — average vs Top 20%.

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Learning journey

  1. 1 Know the kit
  2. 2 Win the lane
  3. 3 Timing & rotations
  4. 4 Win the fights
  5. 5 Master

5 stages, each with one target from your own games and one short quiz. Make Lifestealer your mastery hero to start — progress shows on Home and Arcana.

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Phase by phase

Laning: last hits above everything

You 80%Team 20%

  • Skills in lane — Pro cores max Feast (E) first — 99% of 397 games since patch 7.41, then Rage (Q). First talent at level 11.

  • Rage — anti-caster — Rage makes you spell-immune and cleanses disables. Pop it to dive the enemy backline casters spell-free.

Skills 1–7

  1. E1
  2. W2
  3. E3
  4. Q4
  5. E5
  6. R6
  7. E7

Starting items

  • Gauntlets of Strength53%
  • Quelling Blade15%
  • Iron Branch10%
  • Faerie Fire7%
  • Tango6%
  • Magic Stick6%

Items this phase

  • Tango
  • Quelling Blade
  • Iron Branch
  • Circlet of Nobility
  • Magic Wand
  • Boots of Speed
The Carry (Safe Lane)'s job this phase
  • Aim for 45–50 last hits by minute 10 — check that number every game, it's your main KPI.
  • Don't over-harass: trade HP only when it doesn't cost you last hits.
  • Minutes 2 & 4: ask your support to pull so the lane stays near your tower.

Lifestealer

Counters & weaknesses

Sustain hero (heals & lifesteal)Right-click carry (physical damage)

The items that shut Lifestealer down, 3 heroes that trouble it, and your answer when you play it.

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Why this way? How OpenAI Five learned

  1. One hero, one role first

    OpenAI's first bot played only Shadow Fiend, only mid, until it mastered it. Stay on Lifestealer in one role before moving on.

  2. Small, measurable rewards

    OpenAI Five was rewarded for last hits and staying alive long before it understood winning. That's why each journey stage has one number to hit.

  3. From yourself to the team

    Its 'team spirit' rose over the game: early on, look after yourself; late, play for the team. Each phase's meter shows the split.

  4. Use proven builds

    OpenAI Five's builds were hand-written, not trial and error. Start from the pro build, then experiment.

Phase items: what pros buy on this hero (OpenDota). Parameters: percentiles of players on this hero (OpenDota). Item effects checked against Valve's own item data.