Horologium

Having to do with time, this enigmatic constellation only shows up every 36 days, but for good reason.

Attunement
As a dim constellation, only rock crystals and other such items can be attuned to this constellation.

Mantle of Stars
The Horologium mantle is exceptionally powerful, as it is one of the only items capable of stopping time and the in game tick rate for all non player objects when a player is damaged. The downsides being that it lasts for only 6 seconds and has a significant cooldown after doing so.

Ritual
A Horologium ritual will cause anything in its radius to significantly speed up in terms of in game ticks, including plant growth, animal maturity, and even furnaces and machines that use ticks. The speed boost is dependent on the rock crystal used and amount of starlight taken in.

Corrupt Ritual
One of the most powerful corrupt rituals there is. The corrupt Horologium ritual will cause the tick rate and movement of any mob in its radius to cease almost indefinitely, as long as starlight is supplied to it. This can be used to not only trap enemies, but also heavily sabotage any enemy players as well, halting all progress on machines or crafting.