Well of Radiance

When casting well of radiance, you take a martial weapon of your choice and drive it into the ground in front of you. This weapon becomes immobile and unusable for the duration of the spell. From it spews forth a warm bath of holy light that stretches in a 20 ft cylinder. Any creatures of your choice (including yourself) who enter the cylinder regain 4 of their hit dice worth of hit points. These creatures also gain resistance to all damage while in the cylinder. The spell ends at the beginning of your next turn, and the weapon is available for use again.