Angel of Serenity

Mana cost: {4}{W}{W}{W}
Type: Creature — Angel
Power / toughness: 5 / 6
Set: The List #C15-58 (mythic)
Price: $1.33 USD

Flying
When this creature enters, you may exile up to three other target creatures from the battlefield and/or creature cards from graveyards.
When this creature leaves the battlefield, return the exiled cards to their owners' hands.

Angel of Serenity has 8 printings, first in Return to Ravnica (2012). EDHREC ranks it #3,683 among Commander cards. It appears most in Kaalia of the Vast decks (13,432 on EDHREC). 5 public decks on TCG run it. It has 4 official rulings.

Legality

commander: legal
legacy: legal
vintage: legal
pauper: not legal
modern: legal
pioneer: legal
standard: not legal
brawl: not legal

Public decks that run Angel of Serenity

Angels: They're Just Like Us, but Cooler and with Wings - Secret Lair Drop, led by Bruna, the Fading Light
Phantom Premonition - Kaldheim Commander, led by Ranar the Ever-Watchful
Silverquill Statement - Commander 2021, led by Breena, the Demagogue
Wade into Battle - Commander 2015, led by Kalemne, Disciple of Iroas
Wade into Battle - Commander Anthology Volume II, led by Kalemne, Disciple of Iroas

Commanders that run Angel of Serenity most

Deck counts from EDHREC.

Often played with Angel of Serenity

Cards that show up in the same decks on EDHREC.

Rulings

2012-10-01: If Angel of Serenity leaves the battlefield before its "enters" ability has resolved, its leaves-the-battlefield ability will trigger and do nothing. Then the "enters" ability will resolve and exile the targeted creatures and/or creature cards indefinitely.
2013-01-24: If a creature targeted by the "enters" ability dies before that ability resolves, it will become an illegal target even though it may be a creature card in a graveyard when the ability resolves. It won't be exiled.
2013-01-24: You choose up to three total targets from among other creatures on the battlefield and creature cards in graveyards. You may choose zero targets.
2013-01-24: You choose the targets as part of putting the "enters" trigger on the stack. Because that ability includes "you may," you choose whether to exile the targets when the ability resolves.