Cowards' Punishment

Cowards' Punishment (Ritual)
(Transmutation)

Spellcraft DC: 16
Components: V, S
Casting Time: 1 standard action
Range: 12,000ft
Target: One creature
Duration: Contingent until expended, then instantaneous
Saving Throw: Fortitude half
Spell Resistance: Yes
To Develop: 144,000 gp; 3 days; 5760 XP. Seeds: destroy (DC 29). Factors: activates when subject casts a Conjuration (Teleportation) spell (+25 DC), 1-action casting time (+20 DC). Mitigating factors: three additional casters contributing one 9th-level spell slot (-51 DC), one additional caster contributing one 4th-level spell slot (-7 DC).

The spell deals 20d6 damage to one target creature when that creature casts any Conjuration (Teleportation) spell, including epic spells developed using the transport seed. The damage is of no particular type or energy. If the target creature is reduced to -10 hit points or less (or 0 hit points in the case of constructs and undead), it is utterly destroyed as if disintegrated, leaving behind only a trace of fine dust.