Yawgmoth Demon [Chronicles] 042 the Magistus Glass Goddess" once

the Magistus Glass Goddess" once per turn

then you can Special Summon that monster from the Extra Deck

Set: Legendary Collection 4: Joey's World Card type: Normal Spell Rarity: Ultra Rare Target 1 monster in either player's Graveyard

Set: Dark Revelation Volume 4 Card type: Normal Trap Rarity: Common Attack: 0 Defense: 0 Select 2 "Dark World" monsters from your Graveyard and add them to your hand

Also their effects on the field and their activated effects are negated

Yawgmoth Demon [Chronicles] 042 the Magistus Glass Goddess" onceSet: Chronicles Type: Creature Phyrexian Demon Rarity: Rare Cost: {4}{B}{B} Flying (This creature can't be blocked except by creatures with flying or reach.) First strike (This creature deals combat damage before creatures without first strike.) At the beginning of your upkeep, you may sacrifice an artifact. If you don't, tap Yawgmoth Demon and it deals 2 damage to you.