Is False Summoning legal in Standard, Modern, and Commander?

False Summoning is legal in: Legacy, Vintage, Commander, Pauper.

What type of card is False Summoning?

False Summoning is an Instant. Its oracle text reads: "Counter target creature spell."

Instant

Counter target creature spell.

Set Masters Edition IV

Rarity Common

Mana Value 2

Artist DiTerlizzi

Collector # 49

Scryfall

Instant Counterspell Commander Pauper Legacy