Is Teneb, the Harvester legal in Standard, Modern, and Commander?

Teneb, the Harvester is legal in: Modern, Legacy, Vintage, Commander.

What type of card is Teneb, the Harvester?

Teneb, the Harvester is a Legendary Creature — Dragon. Its oracle text reads: "Flying Whenever Teneb deals combat damage to a player, you may pay {2}{B}. If you do, put target creature card from a graveyard onto the battlefield under your control."

Teneb, the Harvester

Legendary Creature — Dragon

Flying

Whenever Teneb deals combat damage to a player, you may pay . If you do, put target creature card from a graveyard onto the battlefield under your control.