Sealed is a great format if you look forward to the excitement of checking out new cards and playing without being required to bring your own pre-built deck.

Unlike constructed games—where you arrive with your strategically created deck—in a sealed deck tournament, you build a new deck from six unopened booster packs at the start of the event.

Using the cards in the six boosters and any amount of normal basiclands you build a 40 card deck to use during the tournament.
You are allowed to change your deck during the tournament as long as you only use these cards.

If you're looking for a fun way to boost the size of your card collection while playing the game, sealed deck is the way to go.