Is Igneous Pouncer legal in Standard, Modern, and Commander?

Igneous Pouncer is legal in: Modern, Legacy, Vintage, Commander, Pauper.

What type of card is Igneous Pouncer?

Igneous Pouncer is a Creature — Elemental. Its oracle text reads: "Haste Swampcycling {2}, mountaincycling {2} ({2}, Discard this card: Search your library for a Swamp or Mountain card, reveal it, put it into your hand, then shuffle.)"

Igneous Pouncer

Creature — Elemental

Haste

Swampcycling , mountaincycling (, Discard this card: Search your library for a Swamp or Mountain card, reveal it, put it into your hand, then shuffle.)