Is Loch Mare legal in Standard, Modern, and Commander?

Loch Mare is legal in: Standard, Modern, Pioneer, Legacy, Vintage, Commander, Historic.

What type of card is Loch Mare?

Loch Mare is a Creature — Horse Serpent. Its oracle text reads: "This creature enters with three -1/-1 counters on it. {1}{U}, Remove a counter from this creature: Draw a card. {2}{U}, Remove two counters from this creature: Tap target creature. Put a stun counter on it. (If a permanent with a stun counter would become untapped, remove one from it instead.)"

Loch Mare

Creature — Horse Serpent

This creature enters with three -1/-1 counters on it.

, Remove a counter from this creature: Draw a card.

, Remove two counters from this creature: Tap target creature. Put a stun counter on it. (If a permanent with a stun counter would become untapped, remove one from it instead.)