Is Gleam of Resistance legal in Standard, Modern, and Commander?

Gleam of Resistance is legal in: Modern, Legacy, Vintage, Commander, Pauper.

What type of card is Gleam of Resistance?

Gleam of Resistance is an Instant. Its oracle text reads: "Creatures you control get +1/+2 until end of turn. Untap those creatures. Basic landcycling {1}{W} ({1}{W}, Discard this card: Search your library for a basic land card, reveal it, put it into your hand, then shuffle.)"