Rift Flux
This material is slowly generated by the nexus when it is active and can be used to craft things such as diamonds or infused swords currently. Armor and more items will come. You can also find glowing remnants on some attackers that you can craft together into rift flux.

One use is to craft them into diamonds, though it still takes significant effort given the rate of flux generation.
Rift Flux to various items




You could also use them to make one of several useful items, such as the infused sword.
Infused Sword

This adds a special on-use effect to a diamond sword. Hitting mobs charges it up, which happens quite quickly. When charged, activation by right-click will instantly heal you for 3 hearts. Or when you hold shift for 3 hunger. We’ve found this item really helps in a pinch and helps keep up with a lot mobs. You can also use it anywhere in minecraft.
Searing Bow

When you charge up this bow all the way to it’s end, it will shoot burning arrows to light your foes on fire.
Nexus Adjuster

The nexus adjusters enables players to change the nexus spawn range when the nexus is not active.
Material Probe

An upgrade of the adjuster, with a rick-click the material probe also lets you measure the strength of any block as far as invasion mobs are concerned. The probe also can recover traps without triggered them, so you can move or store them.
Traps
Empty Trap

Kind of an empty frame, you can turn these into different kinds of traps. They are always reusable and quite user-friendly, except the one case where you stand on one. The goal of using these is to help keep area control despite being outnumbered, especially in the case of having no buddy to cover your back. You can hear them go off and the rift trap even has an area stun against invasion mobs.
To use one, right-click somewhere on the ground to place it down. After a few seconds it will arm and can be triggered by things walking over it. After the payload is spent, the trap sits there empty. You can pick empty traps up as if they were items (they don’t dissapear or lag as they are not items). If you want to remove an untriggered trap, you can use a material probe to safely recover it, otherwise it will drop as an empty trap item if the block underneath is removed.
Flame Trap (folded)

Note that when crafting with buckets, you get the bucket back.
The flame trap, predictably, bursts into a 3×3 fireball when triggered. The fire stays around for a little while like a fire shield, but it tends to block players too.
Rift Trap (folded)

Rift traps are created by charging empty traps in a nexus. At the moment this is the only block that charges them, but other devices could be added (or different traps). These traps usually kill the mob that stands on it, but also does some damage to mobs in an area around it and stuns them for a few seconds. The stun only works on invasion mobs at the moment for technical reasons.
Don’t worry too much about the charging interfering with flux generation. They both go on at the same time, the current item in the output slot just blocks the other item, like in a furnace.
Strange Bone

Feeding this bone to a wolf you own will bind it to an active nexus if it is nearby (several blocks). Your wolf will then respawn at that nexus if it dies. A purple collar indicates the wolf it bound. It also gains some mob attacking behaviour when not sitting.
Nexus Items
Catalysts
These items are essentially the fuel for the nexus. It is a one-time cost to activate the nexus, putting it in its generating state. Then, other conditions take over.
? Nexus Catalyst: Activates invasion mode, generating more flux and causing lots of mobs to attack until you are overwhelmed
? Stable Catalyst: Activates continuous mode. Mobs often engage in night attacks. Difficulty and flux generation increases over time if you keep successfully defending.
Recipes create a mixture. Baking the mixture in a furnace produces the final catalyst.
Catalyst Mixture and Nexus Catalyst


Stable Mixture and Stable Catalyst


Damping Agents
These items currently help control the nexus in continuous mode
Damping Agent

This item prevents the nexus from increasing its power in continuous mode while it is in the slot. It is retrievable.
Strong Damping Agent

The stronger variant actually causes the nexus charge to dissipate quickly in continuous mode. It is, again, removable. If power reaches zero the nexus will deactivate safely.