Reincarnation

Mana cost: {1}{G}{G}
Type: Instant
Set: Masters Edition III #130 (uncommon)

Choose target creature. When that creature dies this turn, return a creature card from its owner's graveyard to the battlefield under the control of that creature's owner.

Reincarnation has 3 printings, first in Legends (1994). EDHREC ranks it #18,942 among Commander cards. It appears most in Hua Tuo, Honored Physician decks (110 on EDHREC). 1 public deck on TCG runs it. It has 3 official rulings.

Legality

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

Public decks that run Reincarnation

Power Hungry - Commander 2013, led by Prossh, Skyraider of Kher

Commanders that run Reincarnation most

Deck counts from EDHREC.

Often played with Reincarnation

Cards that show up in the same decks on EDHREC.

Rulings

2009-10-01: All Reincarnation does when it resolves is set up a delayed triggered ability. If the targeted creature isn't put into a graveyard this turn, that ability never triggers. If the targeted creature is put into a graveyard this turn, that ability triggers and resolves like any other triggered ability.
2009-10-01: The creature card that will be returned to the battlefield isn't chosen until the delayed triggered ability resolves. The player who chooses is the player who controlled Reincarnation. The player under whose control the chosen creature card enters is the player who owned the targeted creature (in other words, the player into whose graveyard it went), not necessarily the controller of that creature.
2009-10-01: The creature that's returned to the battlefield may be the same one that was put into the graveyard (assuming it's still in the graveyard when the delayed triggered ability resolves). If so, it returns to the battlefield as a brand-new creature.