Is Squid Fire Knight legal in Standard, Modern, and Commander?

Squid Fire Knight is legal in: Commander.

Squid Fire Knight

Q: What type of card is Squid Fire Knight?

Squid Fire Knight is a Stickers. Its oracle text reads: "{TK}{TK} — {T}: The next time target player would roll one or more dice this turn, instead they roll that many dice plus one, then you choose one of those rolls to ignore. {TK}{TK}{TK} — Protection from odd mana values {TK}{TK} — 4/1 {TK}{TK}{TK}{TK} — 6/6"

Stickers

— : The next time target player would roll one or more dice this turn, instead they roll that many dice plus one, then you choose one of those rolls to ignore.