Major Glyphs
Glyph of Banish (Req. lvl. 28) - Increases the duration of your Banish by 5 sec.
Glyph of Conflagrate (Req. lvl. 40) - Reduces the mana cost of your Conflagrate by 20%.
Glyph of Corruption
(Req. lvl. 15) - You Corruption spell has a 4% chance to cause you to
enter a Shadow Trance state after damaging the opponent. The Shadow
Trance state reduces the casting time of your next Shadow Bolt spell by
100%.
Glyph of Curse of Agony (Req. lvl. 15) - Increases the duration of your Curse of Agony by 4 sec.
Glyph of Death Coil (Req. lvl. 42) - Increases the duration of your Death Coil by 0.5 sec.
Glyph of Fear (Req. lvl. 15) - Increases the damage your Fear target can take before the Fear effect is removed by 20%.
Glyph of Felguard (Req. lvl. 50) - Increases the Felguard's total attack power by 10%.
Glyph of Felhunter (Req. lvl. 30) - Increases the critical strike chance of your Felhunter's Shadow Bite ability by 6%.
Glyph of Health Funnel (Req. lvl. 15) - Increases the chance you'll resist spell interruption when channeling your Health Funnel spell by 100%.
Glyph of Healthstone (Req. lvl. 15) - You receive 30% more healing from using a healthstone.
Glyph of Howl of Terror (Req. lvl. 40) - Reduces the cooldown on your Howl of Terror spell by 8 sec.
Glyph of Immolate (Req. lvl. 15) - Increases the periodic damage of your Immolate by 20% but decreases its initial damage by 10%.
Glyph of Imp (Req. lvl. 15) - Increases the damage done by your Imp's Firebolt spell by 10%.
Glyph of Searing Pain (Req. lvl. 18) - Increases the critical strike bonus of your Searing Pain by 20%.
Glyph of Shadow Bolt (Req. lvl. 15) - Reduces the mana cost of your Shadow Bolt by 10%.
Glyph of Shadowburn (Req. lvl. 20) - Increases the critical strike chance of Shadowburn by 20% when the target is below 35% health.
Glyph of Siphon Life (Req. lvl. 30) - Increases the effect of your Siphon Life spell by 20%.
Glyph of Soulstone (Req. lvl. 18) - Increases the amount of health you gain from resurrecting via your Soulstone by 300%.
Glyph of Succubus (Req. lvl. 26) - Increases the duration of your Succubus's Seduction by 3 sec.
Glyph of Unstable Affliction (Req. lvl. 50) - Decreases the casting time of your Unstable Affliction by 0.2 sec.
Glyph of Voidwalker (Req. lvl. 15) - Increases your Voidwalker's total Stamina by 20%.

Minor Glyphs
Glyph of Curse of Exhaustion (Req. lvl. 70) - Increases the range of your Curse of Exhaustion spell by 5 yards.
Glyph of Drain Soul (Req. lvl. 15) - Your Drain Soul ability occasionally creates an additional soul shard.
Glyph of Enslave Demon (Req. lvl. 30) - Reduces the cast time of your Enslave Demon spell by 50%.
Glyph of Kilrogg
(Req. lvl. 22) - Increases the movement speed of your Eye of Kilrogg by
50% and allows it to fly in areas where flying mounts are enabled.
Glyph of Souls (Req. lvl. 68) - Your Ritual of Souls spell no longer requires a Soul Shard.
Glyph of Unending Breath (Req. lvl. 15) - Increases the swim speed of targets affected by your Unending Breath spell by 20%.