Happily Ever After

Mana cost: {2}{W}
Type: Enchantment
Set: Throne of Eldraine Promos #16p (rare)
Price: $0.38 USD

When this enchantment enters, each player gains 5 life and draws a card.
At the beginning of your upkeep, if there are five colors among permanents you control, there are six or more card types among permanents you control and/or cards in your graveyard, and your life total is greater than or equal to your starting life total, you win the game.

Happily Ever After has 6 printings, first in Throne of Eldraine (2019). EDHREC ranks it #14,685 among Commander cards. It appears most in Kenrith, the Returned King decks (1,644 on EDHREC). 1 public deck on TCG runs it. It has 7 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 Happily Ever After

20 Ways to Win, led by Go-Shintai of Life's Origin

Commanders that run Happily Ever After most

Deck counts from EDHREC.

Often played with Happily Ever After

Cards that show up in the same decks on EDHREC.

Rulings

2019-10-04: The card types that could appear among your permanents and cards in your graveyard are artifact, battle, creature, enchantment, instant, kindred, land, planeswalker, and sorcery. Supertypes, such as legendary and basic, aren't card types.
2019-10-04: The second triggered ability of Happily Ever After has one very long intervening "if" clause. This means that all of the conditions must be true as your upkeep begins—you must control permanents with all five colors, your permanents and graveyard must contain six or more card types, and your life total must be high enough—or the ability won't trigger at all. If they're not all true as the ability resolves, you won't win the game.
2019-10-04: Players can't take any actions during your turn before your upkeep begins.
2019-10-04: Lands are normally colorless permanents, even if they tap for mana of a certain color.
2019-10-04: You could have one permanent that's all five colors, or the five colors could be spread out among any number of permanents.
2019-10-04: In a Two-Headed Giant game, Happily Ever After's first ability causes each team to gain 5 life twice.
2019-10-04: Ignore the alternative characteristics of an adventurer card in your graveyard. Its alternative card type won't be counted among the card types of cards in your graveyard.