Is Elvish Warmaster legal in Standard, Modern, and Commander?

Elvish Warmaster is legal in: Modern, Pioneer, Legacy, Vintage, Commander, Historic.

Elvish Warmaster

Q: What type of card is Elvish Warmaster?

Elvish Warmaster is a Creature — Elf Warrior. Its oracle text reads: "Whenever one or more other Elves you control enter, create a 1/1 green Elf Warrior creature token. This ability triggers only once each turn. {5}{G}{G}: Elves you control get +2/+2 and gain deathtouch until end of turn."