Is Shrink legal in Standard, Modern, and Commander?

Shrink is legal in: Legacy, Vintage, Commander, Pauper.

What type of card is Shrink?

Shrink is an Instant. Its oracle text reads: "Target creature gets -5/-0 until end of turn."

Instant

Target creature gets -5/-0 until end of turn.

Set Homelands

Rarity Common

Artist Liz Danforth

Instant Commander Pauper Legacy