Is Surestrike Trident legal in Standard, Modern, and Commander?

Surestrike Trident is legal in: Modern, Legacy, Vintage, Commander.

Surestrike Trident

Q: What type of card is Surestrike Trident?

Surestrike Trident is an Artifact — Equipment. Its oracle text reads: "Equipped creature has first strike and "{T}, Unattach Surestrike Trident: This creature deals damage equal to its power to target player or planeswalker." Equip {4} ({4}: Attach to target creature you control. Equip only as a sorcery.)"

Artifact — Equipment

Equipped creature has first strike and ", Unattach Surestrike Trident: This creature deals damage equal to its power to target player or planeswalker."