Energy Retrieval (110/130) [Base Set 2] XY200 You can only use this

You can only use this effect of "Mekk-Knight Morning Star" once per turn

During your next Standby Phase after this card was destroyed by card effect and sent to the GY: You can destroy 1 "Nephthys" monster in your Deck

Set: Ancient Prophecy Card type: Tuner Monster Rarity: Rare Attack: 0 Defense: 0 While attacking

Must be Special Summoned by the following effect

Set: Legendary Duelists: Ancient Millennium Card type: Effect Monster Rarity: Ultra Rare Attack: 2800 Defense: 2200 If a face-up DARK Machine monster(s) you control is destroyed by battle or card effect: You can Special Summon this card from your hand

Energy Retrieval (110/130) [Base Set 2] XY200 You can only use thisSet: Base Set 2 Type: Trainer Rarity: Uncommon