Is Mistbreath Elder legal in Standard, Modern, and Commander?

Mistbreath Elder is legal in: Standard, Modern, Pioneer, Legacy, Vintage, Commander, Historic.

Mistbreath Elder

Q: What type of card is Mistbreath Elder?

Mistbreath Elder is a Creature — Frog Warrior. Its oracle text reads: "At the beginning of your upkeep, return another creature you control to its owner's hand. If you do, put a +1/+1 counter on this creature. Otherwise, you may return this creature to its owner's hand."

Creature — Frog Warrior

At the beginning of your upkeep, return another creature you control to its owner's hand. If you do, put a +1/+1 counter on this creature. Otherwise, you may return this creature to its owner's hand.

Set Bloomburrow

Rarity Rare

Mana Value 1

Artist Jason Kang

Collector # 184

Scryfall Gatherer