Is Goblin Snowman legal in Standard, Modern, and Commander?

Goblin Snowman is legal in: Modern, Legacy, Vintage, Commander.

Goblin Snowman

Q: What type of card is Goblin Snowman?

Goblin Snowman is a Creature — Goblin. Its oracle text reads: "Whenever Goblin Snowman blocks, prevent all combat damage that would be dealt to and dealt by it this turn.{T}: Goblin Snowman deals 1 damage to target creature it's blocking."

Creature — Goblin

Whenever Goblin Snowman blocks, prevent all combat damage that would be dealt to and dealt by it this turn.<br>: Goblin Snowman deals 1 damage to target creature it's blocking.