Possible AP Bruiser Items That Wouldn't Be Abused By Other Classes

AP Phage:

Amplifying Tome + Ruby Crystal + 315 gold = 1150 gold 25 AP 200 Health

Phage Passive

AP Trinity Force:

AP Phage + Sheen + Stinger + 33 gold = 3333 gold 40 AP 40% AS 250 Health 250 Mana 5% Movement Speed 20% CDR

AP Black Cleaver:

Needlessly Large Rod + Kindlegem + Dagger + = 3000 gold 70 AP 300 Health 20% AS

After using your ultimate ability for the next 20 seconds your basic attacks grant you stacks of Grace(Melee only)

Grace stacks up to 5 time granting the user 6% magic penetration per stack up to 30% and lasts the rest of the duration.

AP Sterak's:

Blasting Wand + Negatron Cloak + Ruby Crystal + 830 gold = 2800 gold 40 AP 40 Magic Resist 300 Health

Passive(Melee only) - After receiving 50% of your maximum health in damage within 2 seconds remove all CC effects and gain a magic damage shield for 250-1100 based on level.

AP Maw:

Seeker's Armguard + Amplifying Tome + Ruby Crystal + 1115 gold= 3050 gold 55 AP 45 Armor 250 Health

Passive(Melee only) - Once you are dropped to 30% health gain a shield of 450 for 2 seconds. and receive 10% lifesteal and spellvamp until out of combat.