Quote Originally Posted by Eslin View Post
Conjure ten pounds of the sun. The wizard has definitely seen the sun before, now you have 4.5 pounds of super dense hydrogen at 15 million degrees, which would be about 27 cubic centimetres.

Obviously the wizard won't survive the ensuing explosion, but nor will anything else in the vicinity.
He could always Contingency* an Otiluke's Resilient Sphere to protect him from the blast. That requires him to be level 11 (to have access to 5th level spells), but it would be an excellent trick to nuke an area.

*(trigger: "Immediately after I use the minor conjuration class feature to conjure ten pounds of the sun")