Midnight Clock (Extended Art) [Throne of Eldraine] Grass[+20] Roar of the World is

Roar of the World is in the command zone or on the battlefield

Empyrial Tactician enters the battlefield or a creature you control deals combat damage to a player

by discarding 1 LIGHT Monster Card from your hand to the Graveyard

Once per turn: You can target 1 face-up card on the field

if the equipped monster destroys an opponent's monster by battle: You can target 1 card your opponent controls

Midnight Clock (Extended Art) [Throne of Eldraine] Grass[+20] Roar of the World isSet: Throne of Eldraine Type: Artifact Rarity: Rare Cost: {2}{U} {T}: Add {U}. {2}{U}: Put an hour counter on Midnight Clock. At the beginning of each upkeep, put an hour counter on Midnight Clock. When the twelfth hour counter is put on Midnight Clock, shuffle your hand and graveyard into your library, then draw seven cards. Exile Midnight Clock.