Is Heartmender legal in Standard, Modern, and Commander?

Heartmender is legal in: Modern, Legacy, Vintage, Commander.

Heartmender

Q: What type of card is Heartmender?

Heartmender is a Creature — Elemental. Its oracle text reads: "At the beginning of your upkeep, remove a -1/-1 counter from each creature you control. Persist (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.)"

Creature — Elemental

At the beginning of your upkeep, remove a -1/-1 counter from each creature you control.

Persist (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.)

Set Shadowmoor

Rarity Rare

Mana Value 4

Artist Rebecca Guay

Collector # 228

Scryfall Gatherer