Is Markov Warlord legal in Standard, Modern, and Commander?

Markov Warlord is legal in: Modern, Legacy, Vintage, Commander, Historic.

Markov Warlord

Q: What type of card is Markov Warlord?

Markov Warlord is a Creature — Vampire Warrior. Its oracle text reads: "Haste (This creature can attack and {T} as soon as it comes under your control.) When this creature enters, up to two target creatures can't block this turn. *"What use is a stake or holy symbol in the hands of a coward?"* Power/Toughness: 4/4"