Xathrid Demon [Magic 2010] Kuriboh Kollection negate the effects of all

negate the effects of all face-up monsters your opponent controls until the end of the Damage Step

"Everything serves a purpose

Set: Legendary Collection Kaiba Card type: Normal Trap Rarity: Ultra Rare During your opponent's turn: Target 1 face-up monster your opponent controls whose ATK is less than or equal to their LP

but during the next Standby Phase

Xathrid Demon [Magic 2010] Kuriboh Kollection negate the effects of allSet: Magic 2010 Type: Creature Demon Rarity: Mythic Cost: {3}{B}{B}{B} Flying, trample At the beginning of your upkeep, sacrifice a creature other than Xathrid Demon, then each opponent loses life equal to the sacrificed creature's power. If you can't sacrifice a creature, tap Xathrid Demon and you lose 7 life.