The Celestus

O Celestus (The Celestus) (pt)

Legendary Artifact (CMC 3)
If it's neither day nor night, it becomes day as The Celestus enters the battlefield.
{T}: Add one mana of any color.
, {T}: If it's night, it becomes day. Otherwise, it becomes night. Activate only as a sorcery.
Whenever day becomes night or night becomes day, you gain 1 life. You may draw a card. If you do, discard a card.