The rocket crashes through a window at nearly the speed of sound; at nearly the same instant, a Dispel completes on a half-ton of high explosive previously under the effect of a Shrink Item spell; at nearly the same instant, that high explosive detonates even as it expands back to normal size.

This explosion has been targeted to launch the Crown of Infernal Majesty out of the Imperial Palace into the air over Egorian.  Not on an exact precalculated trajectory, you can't do that with explosions at this magitech level; but the vector between the Crown and the center of detonation has rendered it predictably the case that the Crown will get launched in a known rough direction.  A certain person has just Teleported into Egorian to watch from that direction, ready to spot the magical signature of the fast-moving major artifact and move to grab it after.

Abrogail Thrune and Aspexia Thrune have impressive resistances and saves and protective magic items, none of which mattered any more than the Palace's security precautions mattered.  A half-ton of explosive going off in the same room isn't a combat attack, it's just you being dead.

The rocket crashes through a window at nearly the speed of sound; at nearly the same instant, a Dispel completes on a half-ton of high explosive previously under the effect of a Shrink Item spell; at nearly the same instant, that high explosive detonates even as it expands back to normal size.

This explosion has been targeted to launch the Crown of Infernal Majesty out of the Imperial Palace into the air over Egorian.  Not on an exact precalculated trajectory, you can't do that with explosions at this magitech level; but the vector between the Crown and the center of detonation has rendered it predictably the case that the Crown will get launched in a known rough direction.  A certain person has just Teleported into Egorian to watch from that direction, ready to spot the magical signature of the fast-moving major artifact and move to grab it after.

Abrogail Thrune and Aspexia Rugatonn have impressive resistances and saves and protective magic items, none of which mattered any more than the Palace's security precautions mattered.  A half-ton of explosive going off in the same room isn't a combat attack, it's just you being dead.

The rocket crashes through a window at nearly the speed of sound; at nearly the same instant, a Dispel completes on a half-ton of low-quality high explosive previously under the effect of a Shrink Item spell; at nearly the same instant, that explosive detonates even as it expands back to normal size.

This explosion has been targeted to launch the Crown of Infernal Majesty out of the Imperial Palace into the air over Egorian.  Not on an exact precalculated trajectory, you can't do that with explosions at this magitech level; but the vector between the Crown and the center of detonation has rendered it predictably the case that the Crown will get launched in a known rough direction.  A certain person has just Teleported into Egorian to watch from that direction, ready to spot the magical signature of the fast-moving major artifact and move to grab it after.

Abrogail Thrune and Aspexia Rugatonn have impressive resistances and saves and protective magic items, none of which mattered any more than the Palace's security precautions mattered.  A half-ton of explosive going off in the same room isn't a combat attack, it's just you being dead.