I created an item list of all Shop/Artifact/Favor items, in the hopes that people will get some use out of it. I'm not sure how quickly it'll get buried on these forums, so I also submitted it to gamefaqs.com as an itemlist FAQ.
On with the show! 
I created it in Word, so the font etc. might come up a little funny, if it gets annoying just let me know and I can edit it.
Breastplate Shop
Scalemail – 400g
+600 Armor
Banded Armor – 550g
+400 Health
+5 Health Per Second
Nimoth Chest Armor – 1500g
+500 Health
+750 Armor
Hauberk of Life – 1750g
+600 Health
+10 Health Per Second
+200 Minion Health
+3 Minion Health Per Second
Duelist’s Cuirass – 3000g
+350 Armor
+500 Health
5% chance deal a critical strike for 1.5x damage.
Armor of Vengeance – 3250g
+1050 Armor
When struck by melee and ranged attacks, wearers of this mystical armor reflect 35 damage back to the attacker.
Platemail of the Crusader – 4500g
+20 Health Per Second
+1000 armor
+250 Minion Health
+4 Minion Health Per Second
Groffling Warplate – 5200g
+675 Health
+1200 Armor
1% chance on hit to gain a shield that absorbs 300 damage for 10 seconds.
Godplate – 10000g
+1050 Health
+1200 Armor
+20 Health Per Second
+275 Minion Health
+300 Minion Armor
Helm Shop
Scaled Helm – 550g
+525 Mana
+4 Mana Per Second
Plate Visor – 600g
+35% Mana Per Second
Plenor Battlecrown – 1500g
+1575 Mana
+70% Mana Per Second
Vlemish Faceguard – 1750g
+1050 Mana
+11 Mana Per Second
+4 Mana Per Second Aura
Theurgist’s Cap – 3000g
+10 Health Per Second
+35% Mana Per Second
+200 Minion Health
+3 Minion Health Per Second
5% chance on being hit to reduce the target’s Health Per Second by 50% and Mana Per Second by 50% for 10 seconds.
Vinling Helmet – 3300g
+1050 Mana
+70% Mana Per Second
3% chance on being hit to restore 350 mana.
Hungarling’s Crown – 6500g
+700 Mana
+18 Mana Per Second
-25% Mana Cost Aura
Boot Shop
Footman’s Sabatons – 600g
+200 health
+260 Mana
Boots of Speed – 1000g
+10% Movement Speed
Unbreakable Boots – 1500g
+600 Health
+5 Health Per Second
+800 Mana
Assassin’s Footguards – 1750g
+5% Attack Speed
+10% Dodge
Ironwalkers – 3750g
+3 Minion Health Per Second
+275 Minion Armor
Whenever Movement Speed is under 5, Armor is increased by 1000.
Desperate Boots – 5000g
+400 Health
+350 Mana
Whenever health is under 30%, Dodge is increased by 20%.
Journeyman Treads – 6750g
+400 Health
+15% Movement Speed
5% chance on being hit to increase Movement Speed by 50% for 10 seconds.
Glove Shop
Gauntlets of Brutality – 400g
+25 Weapon Damage
Gladiator Gloves – 750g
+5% Attack Speed
+4 Minion Damage
Wyrmskin Handguards – 1500g
+15 Weapon Damage
15% chance on hit to eviscerate the target dealing 60 damage and reducing their Attack Speed and Movement speed 15%.
Gauntlets of Despair – 1750g
+350 Mana
15% chance on hit to drain 100 Mana.
Slayer’s Wraps – 3300g
+10 Health Per Second
+30 Weapon Damage
10% chance to deal a critical strike for 2x damage.
Gloves of Fell-Darkur – 3500g
+30 Weapon Damage
+8 Minion Damage
+5% Minion Attack Speed
20% chance on hit to unleash a fiery blast, dealing 175 damage.
Doomspite Grips – 6750g
+30 Weapon Damage
+10% Attack Speed
25% chance on hit to perform a cleaving attack, damaging nearby enemies.
Trinket Shop
Sludge Slinger – 750g
instant
15yd range
30 sec. cooldown
Use: Decreases target’s Attack Speed by 30% for 7 seconds.
Wand of Speed – 1250g
Instant
30 sec. cooldown
Use: Increase Movement Speed by 25% for 8 seconds.
Forest Band – 1250g
+200 Minion Armor
15% on attack to heal your army for 250 health.
Nature’s Reckoning – 1500g
+600 Mana
15% chance on hit to strike nearby enemies with lightning for 250 damage.
Bloodstone Ring – 1750g
+400 Health
+3% Life Steal
Warlord’s Punisher – 2250
1.5 sec cast
15 yd range
30 sec. cooldown
+30 Weapon Damage
Use: Cast a bolt of lightning at the target, dealing 300 damage and arcing to nearby enemies. Demigods struck also lose 400 Mana.
Twig of Life – 3000g
1.0 sec cast
30 sec. cooldown
+100 Minion Health
Use: Your army restores 33% of their maximum Health.
Magus Rod – 3250g
Instant
15 sec. cooldown
+50% Mana Per Second
Use: The cost of abilities is reduced by 50% for 5 seconds.
Ring of the Ancients – 3500g
+400 Armor
+30 Weapon Damage
Orb of Defiance – 3750g
Instant
35 sec. cooldown
+500 Health
+500 Armor
Use: Become invulnerable for 5 seconds. Cannot move, attack or use abilities.
Narmoth’s Ring – 4000g
+750 Health
+20 Health Per Second
+8% Life Steal
Heart of life – 4250g
Instant
30 sec. cooldown
+15 Health Per Second
+50% Mana Per Second
Use: Restore 3000 Health and 3000 Mana over 10 seconds. Any damage will break this effect.
Parasite Egg – 5000g
Instant
15 yd range
30 sec. cooldown
+30 Weapon Damage
+10% Attack Speed
Use: Infest target Demigod with a parasite. Whenever you deal damage to that Demigod, their minions take damage as well. This effect lasts 10 seconds.
Warpstone – 5500g
0.5 sec cast
15yd range
45 sec. cooldown
Use: Warp to a nearby location.
Favor Items
Bejeweled Goggles – 75 Points
+12 vision radius
Can detect normally invisible objects.
Charm of Life – 125 Points
+400 Health
+5 Health Per Second
Death Penalty time reduced by 10%
Brilliant Bauble – 250 Points
Increases experience gained by 10%
Magical Coin Pouch – 325 Points
Decreases cost of items by 10%
Swift Anklet – 450 Points
+15% Movement Speed
Symbol of Purity – 560 Points
Instant
30 sec. cooldown
+250 Health
Use: Purge all negative effects. Cannot use while stunned or frozen
Blood of the Fallen – 750 Points
+800 Health
+5 Health Per Second
Staff of the Warmage – 875 Points
+700 Mana
+15 Weapon Damage
Dark Crimson Vial – 1000 Points
2.0 sec cast
45 sec. cooldown
Use: Heal 33% of your maximum Health.
Amulet of Teleportation – 1125 Points
5000 yd range
3.0 sec cast
45 sec. cooldown
Use: Teleport yourself and your army to targeted friendly structure.
Diamond Pendant – 1250 Points
+250 Mana
-10% to ability cooldowns
Cape of Plentiful Mana – 1475 Points
Instant
45 sec. cooldown
Use: +400% Mana Per Second Aura for 10 seconds.
Saam-el’s Cloak – 1620 Points
+5% Movement Speed
Movement Speed cannot be reduced by more than 25%
Wings of the Seraphim – 1750 Points
Instant
45 sec.cooldown
Use: +200 Health Per Second Aura for 10 seconds. Any damage will break this effect. The effect works only on Demigods.
General’s Favor Items
Totem of War – 675 Points
+15 Weapon Damage
+5% Attack Speed
+5 Minion Damage
Tome of Endurance – 800 Points
+400 Health
+5 Health Per Second
+130 Minion Health
Pendant of Grace – 950 Points
+10% Dodge
+15% Minion Dodge
Ring of Divine Might – 1375 Points
Instant
45 sec. cooldown
+15 Weapon Damage
+10 Minion Damage
Use: Minions are infused with divine power, allowing them to knock away smaller units for 10 seconds.
Horn of Battle – 1100 Points
Instant
45 sec. cooldown
+10 Health Per Second
Use: Minions gain +200 Health Per Second for 10 seconds
Blood Soaked Wand – 1750 Points
2.0 sec cast
45 sec. cooldown
Use: Heal self and all nearby allies for 1000.
Cloak of Night – 2000 Points
15 yd range
Instant
60 sec. cooldown
+280 Mana
+4 Mana Per Second
Use: Warp to a targeted location, dealing 100 damage upon entry.
Assassin’s Favor Items
Blade of the Serpent – 675 Points
Instant
45 sec. cooldown
+400 Mana
+25 Weapon Damage
Use: 100% chance on hit to gain 75% of your damage in Mana for 10 seconds.
Poisoned Dagger – 800 Points
+5% Attack Speed
20% chance on hit to reduce Movement Speed by 25% for 8 seconds.
Mard’s Hammer – 950 Points
+40 Weapon Damage
+5% Attack Speed
Staff of Renewal – 1100 Points
+200 Health
+175 Mana
-20% to ability cooldowns
Essence of Magic – 1375 Points
Instant
45 sec. cooldown
+210 Mana
+7 Mana Per Second
Use: The cost of all abilities is reduced to 0 for 3 seconds.
Furious Blade – 1750 Points
+100 Health
+5% Attack Speed
15% chance to increase Attack Speed by 30% for 5 seconds.
Heaven’s Wrath – 2000 Points
Instant
45 sec. cooldown
Use: Fire a beam of searing light at the targeted location, dealing 250 damage and throwing smaller units into the air.
Artifact Shop
Orb of Veiled Storms – 8000g
Instant
45 sec. cooldown
+25 Health Per Second
+25% Attack Speed
Use: Unleash a wave of pure force in an area, dealing 500 damage.
Mage Slayer – 8000g
+45 Weapon Damage
+25% Attack Speed
+12% Life Steal
Cloak of Flames – 10000g
Instant
45 sec. cooldown
+1050 Mana
+20 Mana Per Second
+30% Attack Speed
Use: Cast a ring of fire around yourself, damaging enemies for 800 damage over 10 seconds.
Cloak of Elfinkind – 12000g
15 yd range
Instant
20 sec. cooldown
+750 Armor
+15% Dodge
+20% Movement Speed
Use: Warp to a targeted location.
Girdle of the Giants – 13000g
+1600 Health
+20 Health Per Second
+50 Weapon Damage
100% chance on hit to perform a cleaving attack, damaging nearby enemies.
Bracelet of Rage – 14000g
Instant
45 sec. cooldown
+50 Weapon Damage
+10 Minion Damage
Use: Nearby allied Demigods gain +300 Weapon Damage for 10 seconds. In addition, nearby units gain +10 Weapon Damage for 10 seconds.
Unmaker – 15000g
Instant
30 sec. cooldown
+20 Weapon Damage
+10 Minion Damage
+15% Minion Attack Speed
20% chance to increase Attack Speed by 30% for 5 seconds.
Use: Deal 20% Weapon Damage for 10 seconds.
Bulwark of the Ages – 16000g
+1000 Health
+20 Health Per Second
+1500 Armor
+250 Minion Health
+375 Minion Armor
All damage reduced by 25%
Stormbringer – 17500g
+2100 Mana
+70% Mana Per Second
-15% to Ability Cooldowns
100% chance on hit to gain 10% of your damage in Mana.
Ashkandor – 18000g
+12% Life Steal
+120 Weapon Damage
+25% Attack Speed
+15 Minion Damage
+15% Minion Attack Speed
10% chance deal a critical strike for 4x damage.
Deathbringer – 20000g
20yd range
Instant
30 sec. cooldown
+1500 Health
+80 Weapon Damage
+20% Attack Speed
+150% Mana Per Second
Use: Silence target, preventing any abilities for 5 seconds.
All Father’s Ring – 25000g
+1800 Health
+30 Health Per Second
+2600 Mana
+25 Mana Per Second
+1500 Armor
+50 Weapon Damage
+30% Attack Speed
+15% Movement Speed
+10% Dodge
+450 Minion Health
+375 Minion Armor
+10 Minion Damage
+15% Minion Attack Speed
