Is Eddymurk Crab legal in Standard, Modern, and Commander?

Eddymurk Crab is legal in: Standard, Modern, Pioneer, Legacy, Vintage, Commander, Historic.

Eddymurk Crab

Q: What type of card is Eddymurk Crab?

Eddymurk Crab is a Creature — Elemental Crab. Its oracle text reads: "Flash This spell costs {1} less to cast for each instant and sorcery card in your graveyard. This creature enters tapped if it's not your turn. When this creature enters, tap up to two target creatures. Power/Toughness: 5/5"