Tiras, Keeper of Genesis [BP01-EN029] Rare Dark Revelation Volume 4 they discard a card

they discard a card

Set: Duelist Alliance Card type: Xyz/Effect Monster Rarity: Ghost Rare Attack: 2500 Defense: 2100 3 Level 4 monsters While this card has Xyz Material

you can activate 1 of these effects

that target loses ATK and DEF equal to the ATK and DEF of the "Burning Abyss" monster sent to the Graveyard this way

Set: OTS Tournament Pack 8 Card type: Effect Monster Rarity: Ultimate Rare Attack: 0 Defense: 0 If a card(s) is added from the Main Deck to your opponent's hand

Tiras, Keeper of Genesis [BP01-EN029] Rare Dark Revelation Volume 4 they discard a cardSet: Battle Pack: Epic Dawn Card type: Xyz Effect Monster Rarity: Rare Attack: 2600 Defense: 1700 2 Level 5 monsters. This card's effects can only be applied or activated while it has Xyz Material. This card cannot be destroyed by card effects. At the end of the Battle Phase, if this card attacked or was attacked: Target 1 card your opponent controls, destroy the target. During each of your End Phases: Detach 1 Xyz Material from this card.