Is Endling legal in Standard, Modern, and Commander?

Endling is legal in: Modern, Legacy, Vintage, Commander, Historic.

Endling

Q: What type of card is Endling?

Endling is a Creature — Zombie Shapeshifter. Its oracle text reads: "{B}: This creature gains menace until end of turn. {B}: This creature gains deathtouch until end of turn. {B}: This creature gains undying until end of turn. (When this creature dies, if it had no +1/+1 counters on it, return it to the battlefield under its owner's control with a +1/+1 counter on it.) {1}: This creature gets +1/-1 or -1/+1 until end of turn. Power/Toughness: 3/3"

Creature — Zombie Shapeshifter

: This creature gains menace until end of turn.

: This creature gains deathtouch until end of turn.

: This creature gains undying until end of turn. (When this creature dies, if it had no +1/+1 counters on it, return it to the battlefield under its owner's control with a +1/+1 counter on it.)

: This creature gets +1/-1 or -1/+1 until end of turn.