using morph

By the vary nature of the spell, uses are as varied as the total properties of all the different creatures. So the first tactic is to make sure you have other creatures in your spell collection for skill you want to use.

A very common tactic is to morph your wizard into an eagle and get your wizard around the map quickly, and over oobsticles.
Or morphing into a faerie or vampire is a quick way to get around picking up mana sprites.

If you wizard is being attacked by a single enemey creature, why not morph into your attacker and attack back (your health will generally be higher).

A further tactic is to hide your wizard within a similar group of creatures.

The player can use the wizard portrait to turn a morphed wizard back to his original form.

defeating morph

Disenchanting a wizard, flying in the form of a morphed dragon or other flying creature, will cause the wizards to fall to the ground. If the wizard changes back when over invalid terrain for the creature (like flying over deep water), then it will gain damage.
Better still, gorgon stare would make the stone wizard fall to it's death!

A wizard, even if morphed, is still represented by a cross hair on the scanner - so he is not as camoflagued as he thinks - doh!