Is Lineprancers legal in Standard, Modern, and Commander?

Lineprancers is legal in: Commander. It is banned in: Legacy, Vintage.

What type of card is Lineprancers?

Lineprancers is a Creature — Centaur Performer. Its oracle text reads: "When Lineprancers enters, you get {TK}{TK}, then you may put a power and toughness sticker on a creature you own. {3}{G}: Target creature you don't control blocks target creature you control with a power and toughness sticker on it other than Lineprancers this turn if able."

Lineprancers

Creature — Centaur Performer

When Lineprancers enters, you get , then you may put a power and toughness sticker on a creature you own.

: Target creature you don't control blocks target creature you control with a power and toughness sticker on it other than Lineprancers this turn if able.