What type of card is Ring Out?

Q: What type of card is Ring Out?

Ring Out is an Instant. Its oracle text reads: "Counter target noncreature spell. Whenever an opponent casts a spell named Sol Ring, if Ring Out is in your library, you may search you library for Ring Out, and cast it without paying its mana cost targeting that Sol Ring, then shuffle."

Ring Out

Instant

Counter target noncreature spell.

Whenever an opponent casts a spell named Sol Ring, if Ring Out is in your library, you may search you library for Ring Out, and cast it without paying its mana cost targeting that Sol Ring, then shuffle.

Set Unknown Event

Rarity Uncommon

Mana Value 2

Collector # UU02b

Scryfall