Gemini Summoner (LDK2-ENJ17) - Legendary Decks II 1st Edition

Once per turn, during your opponent's End Phase: You can pay 500 LP; Normal Summon/Set 1 Gemini monster from your hand or Normal Summon 1 face-up Gemini monster you control. The first time this card would be destroyed by battle each turn, it is not destroyed.