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Field Spell

If an "Elemental HERO" monster attacks a monster that has a higher ATK, the attacking monster gains 1000 ATK during damage calculation only.

Rulings – Yugipedia

Printings:

Cybernetic Revolution: CRV-EN048 (Super Rare) - 2005-08-17
Cybernetic Revolution: CRV-EN048 (Ultimate Rare) - 2005-08-17
Duelist Pack: Jaden Yuki: DP1-EN021 (Rare) - 2006-02-08
Dark Revelation Volume 4: DR04-EN048 (Rare) - 2007-11-14
Gold Series 2009: GLD2-EN038 (Common) - 2009-04-21
Legendary Collection 2: The Duel Academy Years Mega Pack: LCGX-EN082 (Common) - 2011-10-04
Legendary Duelists: Magical Hero: LED6-EN021 (Common) - 2020-01-16
Speed Duel GX: Duel Academy Box: SGX1-ENA15 (Common) - 2022-03-17
Legendary Duelists: Season 3: LDS3-EN105 (Common) - 2022-07-21

Prices:

Cardmarket: 0.09 €
TCGplayer: $ 0.12