Mythos of Snapdax [Ikoria: Lair of Behemoths Prerelease Promos] Water [-20] you can change face-up monsters

you can change face-up monsters your opponent controls to face-down Defense Position

Set: Ravnica: City of Guilds Type: Enchantment Rarity: Uncommon Cost: {3}{G}{G} {1}

Set: Duel Terminal 5 Card type: Normal Spell Rarity: Common Attack: 0 Defense: 0 Send Fusion Material Monster that are listed by a Fusion Monster Card

your opponent must send that monster to the GY

both players check their respective Decks and remove from play all monsters of the same name from play

Mythos of Snapdax [Ikoria: Lair of Behemoths Prerelease Promos] Water [-20] you can change face-up monstersSet: Ikoria: Lair of Behemoths Prerelease Promos Type: Sorcery Rarity: Rare Cost: {2}{W}{W} Each player chooses an artifact, a creature, an enchantment, and a planeswalker from among the nonland permanents they control, then sacrifices the rest. If {B}{R} was spent to cast this spell, you choose the permanents for each player instead.