Your search for "One for One RGBT-EN045" revealed the following:
One for One - RGBT-EN045 - Rare - Unlimited from Raging Battle Unlimited, available at 401 Games Canada. Rarity: Rare Card Text:Send 1 Monster Card from your hand to the Graveyard. Special Summon 1 Level 1 monster from your hand...
One for One - RGBT-EN045 - Rare - 1st Edition from Raging Battle 1st Edition, available at 401 Games Canada. Rarity: Rare Card Text:Send 1 Monster Card from your hand to the Graveyard. Special Summon 1 Level 1 monster from...