This move effect may be in need of research. Reason:Does it deal super-effective damage to Flying types in Inverse Battles? You can discuss this on the talk page.
Thousand Arrows inflicts damage. Despite being a Ground-type move, it can damage ungrounded Pokémon that are Flying-type, have Levitate, hold an Air Balloon, or are affected by Magnet Rise or Telekinesis; a Flying-type Pokémon not already grounded will receive neutral damage from Thousand Arrows, regardless of its secondary type, and the effects of Magnet Rise and Telekinesis will be removed.
Thousand Arrows can hit Pokémon during the semi-invulnerable turns of Fly, Bounce, and Sky Drop. If it hits a Pokémon that is using Fly or Bounce, it will knock it down, cancelling the move; if it hits a Pokémon using or affected by Sky Drop, it will not be knocked down. A Pokémon under the effect of Thousand Arrows can still use these moves on subsequent turns.