Meteorain

Normal Trap

During this turn, when your monsters attack with an ATK that is higher than the DEF of your opponent's Defense Position monster, inflict the difference as Battle Damage to your opponent's Life Points.

Rulings – Yugipedia

Printings:

Magician's Force: MFC-044 (Common) - 2003-10-10
Dark Revelation Volume 1: DR1-EN099 (Common) - 2005-03-19

Prices:

Cardmarket: 0.02 €
TCGplayer: $ 0.43