Your search for "Harmonizing Magician LED6-EN053" revealed the following:
Harmonizing Magician - LED6-EN053 - Common - 1st Edition
Legendary Duelists: Magical Hero 1st Edition
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Harmonizing Magician - LED6-EN053 - Common - 1st Edition from Legendary Duelists: Magical Hero 1st Edition, available at 401 Games Canada. Rarity: Common Card Text:Pendulum Effect:All monsters you control gain 100 ATK and DEF for each face-up "Magician" Pendulum Monster...
Harmonizing Magician - LED6-EN053 - Common - Unlimited from Legendary Duelists: Magical Hero Unlimited, available at 401 Games Canada. Rarity: Common Card Text:Pendulum Effect:All monsters you control gain 100 ATK and DEF for each face-up "Magician" Pendulum Monster with different...