Angel of Destiny

Mana cost: {3}{W}{W}
Type: Creature — Angel Cleric
Power / toughness: 2 / 6
Set: Zendikar Rising Promos #2p (mythic)
Price: $10.24 USD

Flying, double strike
Whenever a creature you control deals combat damage to a player, you and that player each gain that much life.
At the beginning of your end step, if you have at least 15 life more than your starting life total, each player this creature attacked this turn loses the game.

Angel of Destiny has 6 printings, first in Zendikar Rising (2020). EDHREC ranks it #2,953 among Commander cards. It appears most in Giada, Font of Hope decks (16,118 on EDHREC). 1 public deck on TCG runs it. It has 4 official rulings.

Legality

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

Public decks that run Angel of Destiny

Angels: They're Just Like Us, but Cooler and with Wings - Secret Lair Drop, led by Bruna, the Fading Light

Commanders that run Angel of Destiny most

Deck counts from EDHREC.

Giada, Font of Hope: 16,118 decks
Hope Estheim: 3,409 decks
Oloro, Ageless Ascetic: 2,458 decks
Liesa, Shroud of Dusk: 1,684 decks
Will, Scion of Peace: 1,569 decks
Niko, Light of Hope: 1,546 decks
Sigarda, Font of Blessings: 1,035 decks
Bre of Clan Stoutarm: 978 decks

Often played with Angel of Destiny

Cards that show up in the same decks on EDHREC.

Rulings

2020-09-25: If a creature you control somehow deals combat damage to you (most likely because its combat damage was redirected), you gain twice that much life as a single life-gaining event.
2020-09-25: In a Two-Headed Giant game, Angel of Destiny's last ability can trigger as long as your team's life total is greater than your team's starting life total by 15 or more life.
2020-09-25: All first-strike combat damage is dealt at the same time, and, separately, all regular combat damage is dealt at the same time. If one of those amounts of combat damage is enough to cause the player being dealt damage to lose the game, Angel of Destiny's first triggered ability has you gain life, but the other player has already lost the game and can't gain life.
2020-09-25: If Angel of Destiny leaves the battlefield before your end step, its last ability won't trigger and won't cause a player to lose the game, even if Angel of Destiny attacked that player earlier.