Falling Stars
Falling stars are a central focus of LegendGear 2. When in the dark under an open sky at night, from time to time a star will fall out of the sky. If you collect it before it disintegrates, you'll be rewarded with a star piece, used in crafting all kinds of things. A star piece can be broken into 3 stardust, and nine of them can be assembled into a starstone. Right-clicking with a star piece in hand will infuse it with 3 of your experience levels, turning it into an infused star piece, which can likewise be crafted into infused counterparts of the above.
Starglass
Sand and stardust combined and then smelted will create starglass, a form of glass that can both contain and conduct magical energy. A primary use of starglass is crafting it into a hollow starglass shell, which can then be filled with a variety of things... if you have some way to somehow put something inside a sealed glass sphere. Hmm
Dimensional Catalyst and Abstraction Gel
Infused stardust and an ender pearl can be combined to create dimensional catalyst, a substance that can teleport objects short distances. It is an essential tool when working with starglass shells, as it is the only way to put things inside them. Please do use caution when handling it, however.
Infused stardust and a slime ball make another important tool, abstraction gel, which can extract and reify a concept from another material, solidifying it into a nucleus. Nuclei are used to create a variety of potent magical objects.
Starsteel
Iron and infused stardust can be fused to create starsteel, a magically energized metal. Normally, dimensional catalyst is used to embed the dust directly into the iron, though if you have a way to create iron dust, the dusts can be mixed and smelted. Currently its only use is to craft the magic boomerang, but other applications are certainly on the horizon..
Magic Staves
The staff is a new kind of weapon, used to cast an offensive spell in a medium-range area of effect. Charge it up by holding right click, and then release to cast the spell. Different staves provide different additional effects - the frost staff freezes water and slows enemies, while the ember staff melts ice and ignites foes. Use caution - you can hit yourself with your own spell if your targeted area includes you. Also, wearing armor will increase the time it takes to cast your spell, depending on how heavily armored you are.
Emerald Shards and Hearts
Adventuring is lucrative! Enemies can drop emerald shards when slain, which can be combined into emerald pieces by right-clicking or crafting 8 of them. Emerald pieces can similarly be converted to emeralds - it takes 8 pieces (or 64 shards) to make one full emerald. Enemies might also drop hearts, which heal you instantly when collected. Emerald shards and hearts can also occasionally be found by breaking tall grass, though there are limits to the effectiveness of this approach.