Shadow raid bosses can also enrage partway through the battle, and Purified Gems weaken them. These rankings leave both out, as how much each changes the fight isn't settled.
Only one of your Pokémon can be Mega Evolved at a time, so bring one of these and fill the rest of your team from the counters above.
The top Shadow Onix counters, ranked by how many trainers it takes to win the raid in time, each bringing six of that Pokémon at level 40. Fewer is better. Simulated raid battles against Shadow Onix's own moves and stats, with no dodging. Click here for more info »
The best counter to Shadow Onix is Kyogre (Shadow) with Waterfall and Origin Pulse, followed by Kartana, Greninja (Shadow) and Kingler (Shadow). The best Mega or Primal to bring is Mega Greninja with Water Shuriken and Surf+.
Shadow Onix is a Rock/Ground Pokémon, so as a raid boss it is weak to Fighting, Ground, Steel and Ice moves, and doubly weak to Water and Grass moves. Avoid Poison, Electric, Normal, Flying, Rock and Fire moves, which it resists.
Normal