Army of the Undead

A circle of purple and red demonic symbols rise up around you, causing all creatures within 5ft to be pushed back 2d6ft. Your hands rise above you, calling to the very depths of hell. The ground around you begins to break, skeletal and zombified hands crawl out of the ground. You summon 10d20 skeletons and 10d20 zombies. On an intelligence save of 22 the zombies and skeletons will fall under your command. You may tell them to do one simple task, such as target an enemy or group of enemies. After their task is complete they will sink back into the ground or die trying. If you fail the intelligence save half the zombies and skeletons (rounding up) will retreat back into the earth and the rest will attack the closest living or non-living thing. The skeletons and zombies summoned by this spell will not attack each other. This spell cannot be cast more than once a month.