Magical King Moonstar (PGL3-EN004) - Premium Gold: Infinite Gold 1st Edition

Cannot be used as a Synchro Material, except for the Synchro Summon of a DARK Synchro Monster. If you control a Tuner monster, you can Special Summon this card (from your hand). If this card is Normal or Special Summoned: You can target 1 other monster you control or in your Graveyard; until the end of this turn, this card's Level becomes the same as that monster's, also you cannot Special Summon, except by Synchro Summon.