Is Threefold Signal legal in Standard, Modern, and Commander?

Threefold Signal is legal in: Legacy, Vintage, Commander.

What type of card is Threefold Signal?

Threefold Signal is an Artifact. Its oracle text reads: "When this artifact enters, scry 3. Each spell you cast that's exactly three colors has replicate {3}. (When you cast it, copy it for each time you paid its replicate cost. You may choose new targets for the copies. A copy of a permanent spell becomes a token.)"

Threefold Signal

Artifact

When this artifact enters, scry 3.

Each spell you cast that's exactly three colors has replicate . (When you cast it, copy it for each time you paid its replicate cost. You may choose new targets for the copies. A copy of a permanent spell becomes a token.)

Set New Capenna Commander

Rarity Mythic Rare

Mana Value 3

Artist Julian Kok Joon Wen

Collector # 93

Scryfall Gatherer