Ok Here are some of the best rune words:
Faith: Ohm + Jah + Lem + Eld
Missile Weapons (best would be a nice +4 skill Amazon bow)
Level 12-15 Fanaticism aura when equipped
+1-2 to all Skills
+330% Enhanced Damage
Ignore Target's Defense
300% bonus to Attack Rating
+75% Damage to Undead
+50 to Attack Rating against Undead
+15 to all Resistances
10% Reaminate as Returned
75% extra Gold from Monsters
Fortitude: El + Sol + Dol + Lo
Weapons, Body Armor
20% chance to cast level 15 Chilling Armor when struck
+25% Faster Cast Rate
+300% Enhanced Damage
+200% Enhanced Defense
+15 Defense
+1-99 per character level to Life
+7 Replenish Life
+5% to maximum Lightning Resistance
+20-30 to all Resistances
Damage reduced by 7
12% Damage taken goes to Mana
+1 to Light Radius
Grief: Eth + Tir + Lo + Mal + Ral
Swords, Axes
35% chance to cast level 15 Venom on striking
+30-40% Increased Attack Speed
+340-400 to Damage
Ignore Target's Defense
-25% Target Defense
+1.875 per character level to Damage to Demons
Adds 5-30 Fire Damage
-20-25% to enemy Poison Resistance
20% Deadly Strike
Prevent Monster Heal
+2 to Mana after each kill
+10-15 Life after each kill
Infinity: Ber + Mal + Ber + Ist
Polearms (best would be etheral for a mercinary)
50% chance to cast level 20 Chain Lightning when you kill an enemy
Level 12 Conviction aura when equipped
+35% Faster Run / Walk
+255-325% Enhanced Damage
-45-55% to enemy Lightning Resistance
40% chance of Crushing Blow
Prevent Monster Heal
0.5 per character level to Vitality
30% better chance of getting Magic Items
30 charges level 21 Cyclone Armor
Phoenix: Vex + Vex + Lo + Jah
Weapons, Shields (great for a sorc in a shield)
100% chance to cast level 40 Blaze when you level up
40% chance to cast level 22 Firestorm on striking
Level 10-15 Redemption aura when equipped
+350-400% Enhanced Damage
-28% to enemy Fire Resistance
+350-400 Defense against missiles
+50 to Life
+5% to maximum Lightning Resist
+10% to maximum Fire Resist
+15-21 Fire Absorb
Spirit: Tal + Thul + Ort + Amn
Shields (perfect for allll caster characters)
+2 to All Skills
+25-35% Faster Cast Rate
+55% Faster Hit Recovery
+250 Defense against missiles
+22 to Vitality
+89-112 to Mana
+35% Cold Resist
+35% Lightning Resist
+35% Poison Resist
+3-8 Magic Absorb
Attacker takes Damage of 14
Sounds good yeah?
And thanks! The poem is to go with an avatar I made for arenas: