Is Chain Stasis legal in Standard, Modern, and Commander?

Chain Stasis is legal in: Legacy, Vintage, Commander.

What type of card is Chain Stasis?

Chain Stasis is an Instant. Its oracle text reads: "You may tap or untap target creature. Then that creature's controller may pay {2}{U}. If the player does, they may copy this spell and may choose a new target for that copy."

Chain Stasis

Instant

You may tap or untap target creature. Then that creature's controller may pay . If the player does, they may copy this spell and may choose a new target for that copy.