|kanji fr_name = 古の森Forêt Ancienne| de_name = Antiker Wald| it_name = Antica Foresta| pt_name = | es_name = Bosque Antiguo| ja_name = {{Ruby|古|いにしえ}}の{{Ruby|森|もり}}| romaji_name = Inishie no Mori| ko_name = 고대의 숲|image = AncientForest-JPANPR-EN-AnimeSR-5DUE.pngjpg|attribute card_type = Spell|typest property = Field| password = 87624166| effect_types = Effect, Trigger-like|lore = All monsters on the field are switched to When you [[activate]] this card, change any [[Attack Defense Position]] ([[Flip Effectsmonster]] are not activated(s). Monsters cannot be to [[Summonface-up]]ed in [[defense positionAttack Position]], nor can they be changed to . [[defense positionFlip Effect]]s are not activated at this time. If a monster [[attack]]s, [[destroy]] it is at the end of that [[destroyedturn]] during the 's [[End Battle Phase]].|anime_5d fr_lore = Lorsque vous activez cette carte, changez tous les monstres en Position de Défense en Position d'Attaque face recto. Les effets Flip ne sont pas activés à ce moment. Si un monstre attaque, détruisez-le à la fin de la Battle Phase de ce tour.| de_lore = Wenn du diese Karte aktivierst, ändere alle Monster in Verteidigungsposition in die offene Angriffsposition. Flippeffekte werden dabei nicht aktiviert. Falls ein Monster angreift, zerstöre es am Ende der Battle Phase des Spielzugs.| it_lore = Quando attivi questa carta, metti scoperti in Posizione di Attacco tutti i mostri in Posizione di Difesa. Gli Effetti Scoperta non si attivano in questo modo. Se un mostro attacca, distruggilo alla fine della Battle Phase di quel turno.| pt_lore = | es_lore = Cuando actives esta carta, cambia cualquier monstruo(s) en Posición de Defensa a Posición de Ataque boca arriba. Los Efectos de Volteo no se activan por esto. Si un monstruo ataca, destrúyelo al final de la Battle Phase de ese turno.| ja_lore = このカードの発動時に、フィールド上に守備表示でモンスターが存在する場合、そのモンスターを全て表側攻撃表示にする。この時、リバース効果モンスターの効果は発動しない。また、モンスターが攻撃を行った場合、攻撃を行ったモンスターをバトルフェイズ終了時に破壊する。| trans_lore = When you activate this card, change any Defense Position monster(s) to face-up Attack Position. Flip Effect '''Monsters' effects''' are not activated at this time. If a monster attacks, destroy it at the end of that turn's Battle Phase. | ko_lore = 이 카드의 발동시에, 필드 위에 수비 표시로 몬스터가 존재할 경우, 그 몬스터를 전부 앞면 공격 표시로 한다. 이 때, 리버스 효과 몬스터의 효과는 발동하지 않는다. 또한, 몬스터가 공격을 실행했을 경우, 공격을 실행한 몬스터를 배틀 페이즈 종료시에 파괴한다.| en_sets = ANPR-EN048; Ancient Prophecy; Super Rare| fr_sets = ANPR-FR048; Ancient Prophecy; Super Rare| de_sets = ANPR-DE048; Ancient Prophecy; Super Rare| it_sets = ANPR-IT048; Ancient Prophecy; Super Rare| sp_sets =[[YuANPR-SP048; Ancient Prophecy; Super Rare| jp_sets = ANPR-JP048; Ancient Prophecy; RareDE04-JP027; Duelist Edition Volume 4; Common| kr_sets = ANPR-KR048; Ancient Prophecy; Rare| anti-Gisupports = Flip monster| action = * Changes battle positions* Flips monsters face-Oh! 5D'up| m/s /t = * Destroys face- Episode 018up Monster Cards* Prevents activation of Flip monsters' effects|018]]misc = At the end of the Battle Phase| database_id = 8338