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If you're looking for magical equivalents of the various energies, lasers are light.
Maybe go with "Globe of Daylight" type magical sunlight. Have it do extra damage to undead and/or evil creatures/people.

a laser that also hits with blinding flash would be devastatingly powerful.

Technically there is no limit to the amount of energy you can put into a laser as well. The main problem is you are shooting in an atmosphere and the materials will also be effected by the energy you are storing so they can only hold so much before they give way. But with a techno Wizard with the Immune to energy and vacuum spells should be able to make one hell of a cannon.

One rouge suicidal techno wizard could with enough time blow up the planet.