Is River Herald Scout legal in Standard, Modern, and Commander?

River Herald Scout is legal in: Standard, Modern, Pioneer, Legacy, Vintage, Commander, Pauper, Historic.

River Herald Scout

Q: What type of card is River Herald Scout?

River Herald Scout is a Creature — Merfolk Scout. Its oracle text reads: "When this creature enters, it explores. (Reveal the top card of your library. Put that card into your hand if it's a land. Otherwise, put a +1/+1 counter on this creature, then put the card back or put it into your graveyard.) *"Don't worry, little swimmers. I'm here for the ruins, not you."* Power/Toughness: 1/2"

Creature — Merfolk Scout

When this creature enters, it explores. (Reveal the top card of your library. Put that card into your hand if it's a land. Otherwise, put a +1/+1 counter on this creature, then put the card back or put it into your graveyard.)

*"Don't worry, little swimmers. I'm here for the ruins, not you."*

Power/Toughness: 1/2

Set The Lost Caverns of Ixalan

Rarity Common

Mana Value 2

Artist Josu Hernaiz

Collector # 72

Scryfall