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Pick another hero

Hero Mastery

Earth Spirit

A stone roamer: Rolling Boulder for mobility + damage, Boulder Smash punts stones/heroes into a stun, Geomagnetic Grip pulls, and Magnetize tags the enemy team for chained detonation.

Pos 2 · MidlanerPos 4 · Soft Support
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Mastery parameters

Your GPM, last hits and damage per game against other Earth Spirit 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 Earth Spirit your mastery hero to start — progress shows on Home and Arcana.

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Phase by phase

The 1v1: last hits + rune control

You 70%Team 30%

  • Skills in lane — Pro cores max Boulder Smash (Q) first — 97% of 371 games since patch 7.41, then Geomagnetic Grip (E). First talent at level 11.

  • Level 6 — Magnetize — Magnetize tags enemies; Boulder Smash/Rolling Boulder detonate the tag — an AoE combo that melts a group.

  • Early roam — Stock remnants then roam: Rolling Boulder + Boulder Smash give a long-range stun gank in minutes 3–8.

Skills 1–7

  1. Q1
  2. E2
  3. Q3
  4. E4
  5. Q5
  6. R6
  7. W7

Starting items

  • Iron Branch62%
  • Tango14%
  • Observer Ward13%
  • Faerie Fire8%
  • Circlet of Nobility1%
  • Blood Grenade1%

Pros buy this phase

  • Power Treads91%
  • Tranquil Boots5%
  • Phase Boots3%
  • Spirit Vessel2%
The Midlaner's job this phase
  • Focus on last hits & denies — a 10-creep lead by minute 5 is a real level advantage.
  • Minutes 6, 8, 10, …: check water/power runes. A full Bottle means you can spam spells.
  • Ask a support to arrive 30 seconds before power runes when your lane is rough.

Earth Spirit

Counters & weaknesses

Slippery escape hero

The items that shut Earth Spirit 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 Earth Spirit 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.