Urgoros, Emptiness of Vhelnish

Flying, indestructible
Whenever Urgoros, Emptiness of Vhelnish enters the battlefield, each opponent discards a card at random. If three cards were to be put into an opponent's graveyard from anywhere, create a 2/1 black Specter creature token with flying with "Whenever this creature deals combat damage to a player, that player discards a card".