Cup of Community

Description
The Cup of Community is a silver colored chalice decorated with gems. When charged, the gems glow softly and the cup is filled with red liquid. The liquid cannot be removed except by drinking it, and will otherwise remain level with the rim of the cup regardless of how it is handled. Testing the liquid reveals that at any given time, it comes up as the combined blood of all sentient creatures within a 30 foot radius of the Cup. Despite this, none of the creatures are missing any blood or other fluids.

The Cup is activated when a sentient being drinks all of the liquid from the cup, which takes a full round action. When this occurs, the Cup of Community forms a tether to each sentient creature within a 15 foot radius of the cup. If one or more beings tethered to the cup need to make a saving throw, all beings tethered to the cup roll. Whoever needed to make the saving throw uses the highest result among all such rolls.

The tethers last either one hour or until the cup's effect has been triggered three times. If a tethered creature goes more than 15 feet away from the cup, they lose their tether for the rest of the current activation. The Cup deactivates once one of the following occurs: Once the Cup deactivates, it begins refilling with the same red liquid. It takes 24 hours after deactivation to refill, and the gems are dim until it is fully charged.
 * 1) There isn't more than one creature tethered to the cup
 * 2) Its effect has been triggered three times since the last activation

In addition to the other effects, the Cup also allows each individual tethered to it to sense the location of the others they are connected to. The cup also allows each individual to sense feelings from others. Specifically, the cup finds what feelings each has that leads them to stick with the group and work together and then allows the others to sense that. When sensing such feelings from another, the Cup manipulates their intensity so everyone appears to be equally committed to the group.

Destruction
If the Cup of Community is activated and the person that did so then kills at least three others while they are also connected to the cup, it destroys the murderer's capacity to use magic of any kind before reverting to a normal cup.