Piru, the Volatile — ruling 1

Because Piru had lifelink when it was on the battlefield, you will gain life equal to the damage it deals as its last triggered ability resolves.

Piru, the Volatile : règles, fonctionnement et interactions (MTG)

Piru, the Volatile is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.

Official card text

Flying, lifelink At the beginning of your upkeep, sacrifice Piru unless you pay . When Piru dies, it deals 7 damage to each nonlegendary creature.

How it works : Piru, the Volatile

Original English text — Wizards of the Coast / Scryfall

#1June 18, 2021· Wizards of the Coast
Because Piru had lifelink when it was on the battlefield, you will gain life equal to the damage it deals as its last triggered ability resolves.
No other card is named in this ruling.