Lathiel, the Bounteous Dawn

Mana cost: {2}{G}{W}
Type: Legendary Creature — Unicorn
Power / toughness: 2 / 2
Set: Multiverse Legends #50 (rare)
Price: $2.38 USD

Lifelink
At the beginning of each end step, if you gained life this turn, distribute up to that many +1/+1 counters among any number of other target creatures.

Lathiel, the Bounteous Dawn has 8 printings, first in Commander Legends (2020). EDHREC ranks it #3,174 among Commander cards. It appears most in Betor, Ancestor's Voice decks (12,907 on EDHREC). 1 public deck on TCG runs it. It has 5 official rulings.

Legality

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

Public decks that run Lathiel, the Bounteous Dawn

Hatsune Miku - Secret Lair Commander, led by Trostani, Selesnya's Voice

Commanders that run Lathiel, the Bounteous Dawn most

Deck counts from EDHREC.

Often played with Lathiel, the Bounteous Dawn

Cards that show up in the same decks on EDHREC.

Rulings

2020-11-10: The triggered ability will consider the total amount of life you've gained that turn, not how your life total has changed. For example, if you start the turn at 10 life, then gain 5 life, and then lose 7 life, you'll distribute five +1/+1 counters, even though your life total is now lower than it was at the beginning of the turn.
2020-11-10: If some, but not all, of the creatures are illegal targets as the triggered ability tries to resolve, the original distribution of counters still applies and the counters that would have been put on illegal targets are lost. If all of the creatures are illegal targets, the ability won't resolve.
2020-11-10: Gaining more life in response to the triggered ability won't change how many counters will be distributed, nor will it change the distribution.
2020-11-10: You may choose no targets if you want. In that case, no +1/+1 counters are put on any creature.
2020-11-10: As each end step begins, if you haven't gained life that turn, Lathiel's triggered ability won't trigger at all. If it does trigger, you choose the targets and how the +1/+1 counters will be distributed as you put the ability on the stack. Each target must receive at least one +1/+1 counter.