Serendib Djinn [Arabian Nights] SM79 If a Link Monster(s) is

If a Link Monster(s) is Special Summoned to your opponent's field (except during the Damage Step): You can target 1 of those monsters

the cradle hauling the casket

This card's effects can only be applied or activated while it has Xyz Material

A Link Monster that used this card as material cannot be destroyed by your opponent's card effects

and that player decides whether to flip again

Serendib Djinn [Arabian Nights] SM79 If a Link Monster(s) isSet: Arabian Nights Type: Creature Djinn Rarity: Rare Cost: {2}{U}{U} Flying At the beginning of your upkeep, sacrifice a land. If you sacrifice an Island this way, Serendib Djinn deals 3 damage to you. When you control no lands, sacrifice Serendib Djinn.