And for some reason, despite it being 5 (Go) and 9 (Kyuu), it’s not a Son Wukong card (Goku).
Edit: Forgot to mention the destroyed monsters have to hit the Graveyard.
No.59 背反の料理人［(バック or パック) ・ザ・コック］ Nanbaazu 59: (P/B)akku za Kokku (Number 59: (P/B)ack the Cook)
Level 4 FIRE Warrior-Type Xyz Effect Monster
Materials: 2 Level 4 Monsters
(1) If this card is the only card you control, this card is unaffected by other cards.
(2) Once per turn, during either player’s turn: You can detach 1 Xyz Material; destroy all other cards you control, then, this card gains 300 ATK for each monster destroyed and sent to the Graveyard, until the end of the turn.
Note: The first Katakana can’t be read clearly despite quality of the picture, we apologize, please wait for further details.