Symbol IV (Spell)

As Symbol I, except it allows the following effects:

Symbol of Insanity (Enchantment) Mind-Affecting

Affected creatures are rendered insane (as the insanity spell), Will negates. The evoked symbol lasts 1 round/level, but the inscribed symbol's effect is permanent (even if the symbol itself isn't). Material component cost: 5,000 gp.

Symbol of Death (Necromancy) Death

Affected creatures are slain, Fort negates. The symbol affects a maximum of 150 hit points, starting from the closest affected creature and moving outward, skipping creatures with too many hit points to be affected. A permanent symbol has no such limitation. Material component cost: 5,000 gp.

Symbol of Summoning (Conjuration)

The symbol conjures a creature or creatures as in Summon Monster VIII. Unlike other symbols, this spell is not sight-dependent. If evoked, the creature appears immediately; if inscribed, the creature appears when the rune is triggered.

The conjured creature cannot leave a 60 ft radius of the symbol that called it, but any effects it can generate (such as spells) can. If the creature is destroyed, it is re-summoned one round later at full health. This continues as long as the symbol is active. The evoked symbol lasts 1 round/level, and the inscribed symbol 10 minutes/level. Material component cost: 5,000 gp.