The Bystial Aluber (MP24-EN188) [25th Anniversary Tin: Dueling Mirrors]

This card's name becomes "Fallen of Albaz" while on the field or in the GY. If this card is Normal or Special Summoned: You can discard 1 card, then target 1 Dragon monster your opponent controls or in their GY, and activate the appropriate effect;<br>• Send this card to the GY, and if you do, take control of that monster on the field until the End Phase.<br>• Send this card to the GY, and if you do, Special Summon that monster from the GY to your field.<br>You can only use this effect of "The Bystial Aluber" once per turn.