Sand Tomb (move)

Sand Tomb is a Ground-Type Move.

Effect
Sand Tomb inflicts 1/16 of the target's maximum HP as damage for two to five turns upon use, in addition to the damage dealt when it is used.It also traps the target, preventing switching and escape.If a trapped Pokémon uses Rapid Spin, it will be freed. If a wild Pokémon uses Sand Tomb on the player's Pokémon, the player may escape if the affected Pokémon has Run Away or is holding a Smoke Ball. However, these do not allow the player to switch the Pokémon out.

if the user of Sand Tomb is holding a Grip Claw, the duration will always be 5 turns. Also, if an affected Pokémon is holding a Shed Shell, it can switch out.