It cannot be knocked out with one hit. One-hit KO
moves cannot knock it out, either.

sturdy

Protects the Pokémon from recoil damage.

rock-head

Physical attacks to the Pokémon lower its Defense
stat but sharply raise its Speed stat.

weak-armor

status

Physical damage, controlled by Attack and Defense

physical

Special damage, controlled by Special Attack and Special Defense

special

One specific move.  How this move is chosen depends upon on the move being used.

specific-move

One other Pokémon on the field, selected by the trainer.  Stolen moves reuse the same target.

selected-pokemon-me-first

ally

The user's side of the field.  Affects the user and its ally (if any).

users-field

Either the user or its ally, selected by the trainer.

user-or-ally

The opposing side of the field.  Affects opposing Pokémon.

opponents-field

user

One opposing Pokémon, selected at random.

random-opponent

all-other-pokemon

One other Pokémon on the field, selected by the trainer.

selected-pokemon

all-opponents

entire-field

user-and-allies

all-pokemon

all-allies

fainting-pokemon

normal

fighting

flying

poison

ground

rock

ghost

steel

fire

water

grass

electric

psychic

dragon

dark

fairy

unknown

shadow

This chain of immense stones resembles a giant serpent. Tremors
shake the earth above as it burrows deep beneath the ground,
feeding on boulders as it goes.

onix

This Pokémon evolved through use of a strange item. Its body is
coated with steel powder and notably hard—not even diamond
can leave so much as a scratch.

steelix

generation-i

cave

A physical attack in which the user charges and
slams into the target with its whole body.

tackle

An earsplitting screech harshly lowers the target’s
Defense stat.

screech

This move can’t be used.
It’s recommended that this move is forgotten.
Once forgotten, this move can’t be remembered.