Tier 3 Raid Boss Guides
Omastar
Difficulty:

Doable at trainer level 30 with proper counters

HP3,600 ATK162.06 DEF176.66
CP Range
Lvl 20 1517 - 1592 Lvl 25 1897 - 1990

Notable Weather

Boosts Boss's Moves Boosts Counters' Moves
Sunny / Clear, Rain, Partly Cloudy Sunny / Clear

Fast Move Difficulty

Move Difficulty
Mud Shot Easy
Water Gun Easy

Charge Move Difficulty

Move Difficulty
Ancient Power Intermediate
Hydro Pump Intermediate
Rock Blast Challenging

Overview

Omastar has a high defense stat among tier 3 bosses, but it’s easy to underestimate its bulk because of a double weakness to Grass. Grass is the key to soloing Omastar. High DPS attackers with only a single type advantage such as Raikou nearly don't cut it at maxed level.

Similar to Vaporeon, Omastar has fast moves that barely pose a threat, but it can launch a devastating Hydro Pump with little notice. Its Rock-type charge moves are not resisted by the traditional Grass-type counters, are used often, and Rock Blast in particular is tricky to dodge.

Approach

Team composition

  • Grow that grass: 10 of 12 fastest counters to Omastar are Grass-types
  • Machamp and Raikou are viable near max level, if already powered up
  • Groudon greatly aids victory against Rock Blast and Ancient Power sets

Dodging strategy

  • Hydro Pump and Rock Blast can snuff out a Solar Beam before it hits
  • At low levels (≤30), should dodge a few Ancient Power to not wipe out
  • If failing: attempt fewer dodges if timing out, more dodges if fainting out

Counters

Note: "Good" movesets are not necessarily viable at the level indicated.

Best Raid Boss Counters

Counters viable at level 25
Venusaur Venusaur
Fast MoveCharge MoveRating

Pros:

  • Has top tier DPS vs. Omastar; a generous win time at L30

  • Non-exclusive Solar Beam movesets are also very viable

  • Many players have one, as it featured on Community Day

Exeggutor Exeggutor
Fast MoveCharge MoveRating

Pros:

  • Has top tier DPS vs. Omastar; a generous win time at L30

  • Many players have one; was common in old metagames

  • Easily accessible due to being a current tier 2 raid boss

aloEg Alolan Exeggutor
Fast MoveCharge MoveRating

Pros:

  • Has top tier DPS vs. Omastar; a generous win time at L30

  • Doubly resists Water; does very well vs. Hydro Pump sets

  • Many players have one, as it featured in a special release

Fast MoveCharge MoveRating

Pros:

  • Excellent DPS vs. Omastar; a generous win time at L30

  • Massive bulk and resists Ancient Power and Rock Blast

  • Many players have one, as it was a former tier 5 raid boss

Cons:

  • Low candy accessibility due to legendary Pokemon status

Sceptile Sceptile
Fast MoveCharge MoveRating

Pros:

  • Excellent DPS vs. Omastar; a generous win time at L30

Cons:

  • Poorly accessible in some locations due to rarity in wild

Counters viable at level 30
Victreebel Victreebel
Fast MoveCharge MoveRating

Pros:

  • Highly accessible; a common species in many locations

Cons:

  • Somewhat frail, benefits a lot from dodging at low levels

Fast MoveCharge MoveRating

Pros:

  • Highly accessible; a common species in many locations

Cons:

  • Somewhat frail, benefits a lot from dodging at low levels

Fast MoveCharge MoveRating

Pros:

  • Resists all of Omastar’s moves, including Rock moves

Cons:

  • Rather frail despite resistances; benefits from dodging

Fast MoveCharge MoveRating

Pros:

  • Many players have one, as it is a current tier 5 raid boss

Cons:

  • Usually has more desirable movesets in other matchups

  • Low candy accessibility due to legendary Pokemon status

Vileplume Vileplume
Fast MoveCharge MoveRating

Pros:

  • Highly accessible; a common species in many locations

Cons:

  • Strictly outclassed by the above Grass-types in this role

Fast MoveCharge MoveRating

Cons:

  • Strictly outclassed by the above Grass-types in this role
  • Poor accessibility; a very rare species in many locations
ノクタス Cacturne
Fast MoveCharge MoveRating

Pros:

  • Obtainable at a high level in locales with sunny weather

Cons:

  • Extremely frail, benefits a lot from dodging at low levels

Raid Graph