Shimmer Dragon - 317 R ELD

Flying
As long as you control four or more artifacts, this creature has hexproof. (It can't be the target of spells or abilities your opponents control.)
Tap two untapped artifacts you control: Draw a card.
The indigo dragon gladly traded a bit of its hoard for everlasting moonlight.
rare
Creature — Dragon
From the Magic: The Gathering set Throne of Eldraine.