Sliver

Added with patch 1.2, slivers are entrances to alternate time streams, and can be seen by using Omen Sight for Guardians or Quantum Sight for Defiants. This ascended skill can be bought from the Planar Goods merchants in Meridian and Sanctum for 25.000 planarite.

Slivers aren't visible to outside players, but when inside a sliver you appear to be in a giant bubble and can look out into the zone where the tear was formed.

Content available in slivers at this moment:
 * Gilded Prophecy, a 10-man raid instance featuring 4 boss encounters.

Content available in future patches:
 * The Drowned Halls, a 10-man raid instance featuring 4 boss encounters.
 * Rise of the Phoenix (no other information known yet)