Is Basking Rootwalla legal in Standard, Modern, and Commander?

Basking Rootwalla is legal in: Legacy, Vintage, Commander, Pauper.

What type of card is Basking Rootwalla?

Basking Rootwalla is a Creature — Lizard. Its oracle text reads: "{1}{G}: This creature gets +2/+2 until end of turn. Activate only once each turn. Madness {0} (If you discard this card, discard it into exile. When you do, cast it for its madness cost or put it into your graveyard.)"