Old Entity Cthugua (SHVA-EN016) - Shadows in Valhalla 1st Edition

1 Tuner + 1+ non-Tuner monsters
If this card is Synchro Summoned: You can return all Rank 4 Xyz Monsters on the field to the Extra Deck. If this card is used as a Fusion Material for a Fusion Summon: Draw 1 card. An Xyz Monster that was Summoned using this card on the field as material gains this effect.
• If it is Xyz Summoned: Draw 1 card.