ZEXAL - Ultimate Unite
Add 1 "Number 39: Utopia," 1 "Number C39: Utopia Ray," and 1 "ZW - Leo Arms" to your Extra Deck at the beginning of the Duel.
Once per turn and twice per Duel, you can activate the following effect by paying half your Life Points. Send 1 "Gagaga" monster you control to the Graveyard and play 1 of 3 different "Gagaga" monsters from outside of your Deck.
You can then change its Level to 4. You can only Special Summon "Number" and "ZW" monsters from your Extra Deck this Duel.
Also, if your Life Points are at 2000 or below, the below effect activates at the beginning of your turn.
Yuma and Astral build the Overlay Network! ZEXAL Morph!
You can use this effect once after transforming to "ZEXAL." If you Xyz Summon "Ultimate Leo Utopia Ray" during this turn, you can also Xyz Summon it by using a Rank 4 "Number C39: Utopia Ray" you control as the material.
Characters