Is Bilbo, Birthday Celebrant legal in Standard, Modern, and Commander?

Bilbo, Birthday Celebrant is legal in: Legacy, Vintage, Commander.

What type of card is Bilbo, Birthday Celebrant?

Bilbo, Birthday Celebrant is a Legendary Creature — Halfling Rogue. Its oracle text reads: "If you would gain life, you gain that much life plus 1 instead. {2}{W}{B}{G}, {T}, Exile Bilbo: Search your library for any number of creature cards, put them onto the battlefield, then shuffle. Activate only if you have 111 or more life."

Bilbo, Birthday Celebrant

Legendary Creature — Halfling Rogue

If you would gain life, you gain that much life plus 1 instead.

, , Exile Bilbo: Search your library for any number of creature cards, put them onto the battlefield, then shuffle. Activate only if you have 111 or more life.