Cosmic Spear

Appearing from a small black portal, three glowing spears of cosmic energy that fly towards a creature of choice. Each spear hits an attacking creature of your choice that you can see within range. A spear deals 5d10 +1 to its target for every point of health lost. If the target has amour of any kind, the amour is penatrated but the damage is halfed. The spears can all strike the target simultaneously, and you can direct them to hit one creature or three. These spears will not stop till the intended target is hit target has changed.