Corpse Knight [Core Set 2020] Colorless[-20] and only if it was

and only if it was sent there from the field

If this card is sent to the GY: You can target 1 face-up monster you control that was Special Summoned from the Extra Deck

I — The First Eruption deals 1 damage to each creature without flying

Set: Eternal Masters Type: Creature — Elf Druid Rarity: Common Cost: {G} {T}: Add {G}

Set: Legendary Collection 4: Joey's World Card type: Effect Monster Rarity: Common Attack: 2600 Defense: 2200 Once per turn: You can target 1 monster your opponent controls

Corpse Knight [Core Set 2020] Colorless[-20] and only if it wasSet: Core Set 2020 Type: Creature Zombie Knight Rarity: Uncommon Cost: {W}{B} Whenever another creature enters the battlefield under your control, each opponent loses 1 life. "With each knight that rode out from the bone white keep, the queen's soldiers felt their courage failing." Krinnea, *Siege of the Bone Spire*