Nim Mongoose [Unknown Event] Sliver if an opponent lost 3

if an opponent lost 3 or more life this turn

Whenever Glissa Sunslayer deals combat damage to a player

If a card or token would be put into a graveyard from anywhere

−6: You get an emblem with “Swamps you control have '{T}: Add {B}{B}{B}{B}

Urza dug deep into Dominaria's ancient past

Nim Mongoose [Unknown Event] Sliver if an opponent lost 3Set: Unknown Event Type: Creature Zombie Mongoose Rarity: Common Cost: {B} Shroud (This creature can't be the target of spells or abilities.) Nim Mongoose enters the battlefield tapped. Threshold Nim Mongoose gets +1 +0 for each artifact you control as long as seven or more cards are in your graveyard.