Is Adaptive Training Post legal in Standard, Modern, and Commander?

Adaptive Training Post is legal in: Legacy, Vintage, Commander.

Adaptive Training Post

Q: What type of card is Adaptive Training Post?

Adaptive Training Post is an Artifact. Its oracle text reads: "Whenever you cast an instant or sorcery spell, if this artifact has fewer than three charge counters on it, put a charge counter on it. Remove three charge counters from this artifact: When you next cast an instant or sorcery spell this turn, copy it and you may choose new targets for the copy."

Artifact

Whenever you cast an instant or sorcery spell, if this artifact has fewer than three charge counters on it, put a charge counter on it.

Remove three charge counters from this artifact: When you next cast an instant or sorcery spell this turn, copy it and you may choose new targets for the copy.

Set Tarkir: Dragonstorm Commander

Rarity Rare

Mana Value 3

Artist Ben Maier

Collector # 18

Scryfall Gatherer