Detect the dead

For 20 seconds, you will see any corpses within 6ft that is 9ft and higher below your current ground level with an x-ray vision, glowing through the ground. For every level the wizard gains, the maximum ft will raise by 2 ft, capping at level 6. Use 1d20 and get a 14 or higher to hit. You may choose to add extra ft to the base radius of 6ft, depending on the ft cap. E.g. A level 4 wizard casts the spell. 4x2 is 8. The wizard decides to detect for 3 extra radius out of the 8 extra maximum. 6+3=9, thus the spell now detected for 9ft distance, and a second piece of parchment must be used.