Conduit Gem

PASSIVE - Every 0.5 seconds you gain a stack of Arcane Energy, causing your next damaging ability to deal an additional 2 True Damage and remove all stacks. Also deals an additional 1 true damage per stack to minions. This effect stacks up to 20 times. Can be upgraded at level 20.

Shoes of Focus

Rod of Tahuti

PASSIVE - Basic Attacks and Abilities gain 15% additional Magical Power against targets below 60% Health.

Y10 Polynomicon

PASSIVE - Using an ability gives your next Basic Attack within the next 8 seconds +75% of your Magical Power as additional Magical Damage. The effect can only apply once every 2 seconds.