Crystal Maiden

Basic Strategy

 * Black King Bar and Lothar's Edge are viable options to increase your survivability while channeling your Ultimate.
 * Blink Dagger is also an item to consider as a way to get in a fight and cast your ultimate as well as a great initiating tool.
 * Arcane Aura should be prioritized as it benefits the whole team greatly especially one with a strong caster/ganker line-up.