Reflection

Reflection is a property which causes magical rays, such as cold, fire, sleep, lightning, death and disintegration to bounce back. It also protects you from Medusa's stoning gaze and the floating eye's paralysis attack. It is normally obtained extrinsically through various items, although polymorphing into a silver dragon or baby silver dragon gives you the property intrinsically.

Reflection can be aquired by putting on an amulet of reflection, wearing a shield of reflection, silver dragon scales, or silver dragon scale mail, or wielding The Longbow of Diana, the Ranger quest artifact.

Strategy

Reflection is a high priority trait. Usually the first time you may get it is by wishing for a silver dragon scale mail when you get a magic lamp from the Gnomish Mines. Silver dragon scale mail is especially good if your character can do two-weapon combat because then you will have both hands for your weapons, compared to wearing shield of reflection. Some weapons, such as Cleaver, are also used with two hands, preventing the use of a shield at the same time. Also, most spells require that you have both hands free to cast them with. One-handed weapons don't interfere, but shields and two-handed weapons make it tough to cast spells.