Lady of the Lake (NKRT-EN013)

Cannot be used as a Synchro Material, except for the Synchro Summon of a Warrior-Type monster. If this card is used for a Synchro Summon, banish it. When this card is Normal Summoned: You can target 1 "Noble Knight" Normal Monster in your Graveyard; Special Summon that target. If this card is in your Graveyard: You can target 1 Level 5 "Noble Knight" monster you control; reduce its Level by 1, and if you do, Special Summon this card from the Graveyard.

Aqua / Tuner / Effect, Noble Knights of the Round Table Box Set