Celestial Observatory [CYHO-EN064] Secret Rare BT9-091 if you have a Digimon

if you have a Digimon with [Digi-Burst] in play

Set: Double Masters 2022 Sealed Release Date: 2022-07-08 The Double Masters 2022 Collector Booster Box contains 4 Double Masters 2022 Collector Boosters

Set: Born of the Gods Sealed Release Date: 2014-02-07 The pantheon of Theros is complete

the very first Xyz Monster theme of the Yu-Gi-Oh

You may play 1 Tamer card among them without paying the cost

Celestial Observatory [CYHO-EN064] Secret Rare BT9-091 if you have a DigimonSet: Cybernetic Horizon Card type: Normal Spell Rarity: Secret Rare Place 1 Level 6 monster from your hand or face up from your field on the bottom of the Deck; draw 2 cards. You can only activate 1 "Celestial Observatory" per turn.