Seed: Destroy

Knowledge (arcane lore) DC: 30; Range: Long; Targets: 1 creature, or up to a 10-foot cube of nonliving matter; Duration: Instantaneous; Saving Throw: Fortitude half; Spell Resistance: Yes
You deal 10d6 points of damage to the target. The damage is of no particular type or energy-it is purely destructive. For each additional 1d6 points of damage dealt, increase the Knowledge (arcane lore) check DC by +2. If the target is reduced to -10 hit points or less (or a construct, object, or undead is reduced to 0 hit points), it is destroyed as if disintegrated, leaving behind only a trace of fine dust. Up to a 10- foot cube of nonliving matter is affected, so an incantation using the destroy seed destroys only part of any very large object or structure targeted.
The destroy seed affects even magical matter, energy fields, and force effects that are normally immune to damage, such as wall of force. Such effects are automatically destroyed. Incantations using the ward seed may also be destroyed, though you must succeed at an opposed Knowledge (arcane lore) check against the other caster to bring down such an effect.