[16] Lands produce mana, or magical energy
It will likely fit into Simic and Gruul decks better than Golgari and Selesnya, but before those two guilds are fully supported, it also has a home in Mono-Green Aggro
Graded Population Report: The Islands I Pulled From The Sea #216 Visualize the distrbution of grades in the chart
It also helps that this is an Azorius precon, meaning it only uses white and blue mana, keeping things simple for new players, but the volume of colorless cards also means you should never be short of cards to play, so long as you have mana on the board
If you play Magic at all beyond Standard, youll want to get your playset of Boltwave sooner rather than later
Even in the early game, if you have a cheap commander in play it can set you ahead several turns over your opponents