Is Halana, Kessig Ranger legal in Standard, Modern, and Commander?

Halana, Kessig Ranger is legal in: Legacy, Vintage, Commander.

What type of card is Halana, Kessig Ranger?

Halana, Kessig Ranger is a Legendary Creature — Human Archer Ranger. Its oracle text reads: "Reach Whenever another creature you control enters, you may pay {2}. When you do, that creature deals damage equal to its power to target creature. Partner (You can have two commanders if both have partner.)"