Amulet of Quoz [Ice Age] 262 that Synchro Monster loses 400

that Synchro Monster loses 400 ATK and DEF at the end of the Damage Step

Nicol Bolas Type: Creature — Cat Warrior Rarity: Common Cost: {G} Wild Nacatl gets +1/+1 as long as you control a Mountain

you can Tribute 1 face-up Plant-Type monster to Special Summon 1 Plant-Type mosnter from your Deck

Set: Ancient Sanctuary Card type: Continuous Spell Rarity: Common Attack: 0 Defense: 0 This card can only be placed on the field by the effect of The First Sarcophagus

When Sejiri Refuge enters the battlefield

Amulet of Quoz [Ice Age] 262 that Synchro Monster loses 400Set: Ice Age Type: Artifact Rarity: Rare Cost: {6} Remove Amulet of Quoz from your deck before playing if you're not playing for ante. {T}, Sacrifice Amulet of Quoz: Target opponent may ante the top card of their library. If they don't, you flip a coin. If you win the flip, that player loses the game. If you lose the flip, you lose the game. Activate only during your upkeep.