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Hero Mastery

Oracle

An advanced lifesaver: False Promise delays all incoming damage then heals it back at once, turning a doomed ally into a full-HP one.

Pos 4 · Soft SupportPos 5 · Hard Support
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Mastery parameters

Your XP and damage per game against other Oracle players — average vs Top 20%. Supports are not graded on GPM.

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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 Oracle your mastery hero to start — progress shows on Home and Arcana.

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Phase by phase

Laning: zone their carry with your offlaner

You 40%Team 60%

  • Skills in lane — Pro supports max Purifying Flames (E) first — 96% of 200 games since patch 7.41, then Fortune's End (Q). First talent at level 11.

  • Level 6 — False Promise — Cast False Promise on a dying ally then spam Purifying Flames on them — all the stored healing detonates at the end and they survive.

Skills 1–7

  1. Q1
  2. E2
  3. E3
  4. W4
  5. E5
  6. R6
  7. E7

Starting items

  • Iron Branch23%
  • Tango16%
  • Blood Grenade14%
  • Magic Stick10%
  • Smoke of Deceit9%
  • Faerie Fire9%

Pros buy this phase

  • Arcane Boots95%
  • Holy Locket5%
The Soft Support's job this phase
  • Stand between the enemy carry and the creeps — make them choose between XP and HP.
  • Secure the minute-6 power rune for your mid — that's your first rotation.
  • Place Observers on rune spots or enemy rotation paths, not random cliffs.

Oracle

Counters & weaknesses

Sustain hero (heals & lifesteal)

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

Members only
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 Oracle 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.