User digs underground, dodging all attacks, and hits next turn.

The user digs underground for the first turn semi-invulnerable to most moves. On the second turn, Dig deals damage.
While underground, the Pokémon it is immune to most moves. The following moves still work on semi-invulnerable Pokémon:

• Earthquake (and deals double damage)
• Magnitude (and deals double damage)
• Fissure
• Helping Hand
• Toxic when used by a Poison-type Pokémon
• It has the ability No Guard
• It is targeted by a Pokémon that has the ability No Guard
• It is under the effect of Lock-On or Mind Reader

The user also avoids end-of-turn damage from Sandstorm and Hail while underground.
Once Dig is selected, the user will not be able to switch out until the move is disrupted or fully executed.
if Dig is interrupted PP will not be deducted from it, and it will not count as the last move used.
Dig can be disrupted by:

• Paralysis
• Infatuation
• Self-inflicted damage by confusion

If the user is holding a Power Herb, Dig executes in one turn.

• In Gen 1 Dig has 100 power.
  Earthquake and Magnitude only do regular damage.
• In Gen 2-3, Dig has 60 power.

If the target uses Mirror Move the move will copy the move used before Dig or fail if it can not.