Is Eternal Acrobat Toast legal in Standard, Modern, and Commander?

Eternal Acrobat Toast is legal in: Commander.

Eternal Acrobat Toast

Q: What type of card is Eternal Acrobat Toast?

Eternal Acrobat Toast is a Stickers. Its oracle text reads: "{TK}{TK} — Whenever this creature deals combat damage to a player, exile target creature you control, then return it to the battlefield under its owner's control. {TK}{TK}{TK} — {T}: Untap another target permanent. {TK}{TK}{TK} — 4/4 {TK}{TK}{TK}{TK}{TK} — 7/8"

Stickers

— Whenever this creature deals combat damage to a player, exile target creature you control, then return it to the battlefield under its owner's control.