Telestria makes her first appearance in the second volume of Heir to the Stars - The Unwritten Chapters, which also takes place during Pharos of the End.
Powers and Abilities
Telestria's specific powers and abilities are currently unknown. However, her mother locked all Omniverses to prevent Telestria from going around erasing entire Omniverses, just for fun. These Omniverses houses an absolutely infinite multiplicity of dimensions, but apparently Telestria had erased a noticeable amount.
Christopher Sincere Pride stated if Telestria simply starts having fun, then her mind emits a frequency that unmakes Creation.
Telestria is one of the daughters of Christopher Sincere Pride.