Is Heartlash Cinder legal in Standard, Modern, and Commander?

Heartlash Cinder is legal in: Modern, Legacy, Vintage, Commander, Pauper.

Heartlash Cinder

Q: What type of card is Heartlash Cinder?

Heartlash Cinder is a Creature — Elemental Warrior. Its oracle text reads: "Haste Chroma — When this creature enters, it gets +X/+0 until end of turn, where X is the number of red mana symbols in the mana costs of permanents you control. Power/Toughness: 1/1"

Creature — Elemental Warrior

Haste

Chroma — When this creature enters, it gets +X/+0 until end of turn, where X is the number of red mana symbols in the mana costs of permanents you control.

Power/Toughness: 1/1

Set Eventide

Rarity Common

Mana Value 2

Artist Steve Prescott

Collector # 56

Scryfall