Spellbinder idea

No one builds because of it's weird passive/active (passive suits battle mages because they can gain charges faster while active suits burst mages or assassins because of the short duration) so I think can be great as an assassin item since there is no AP assassin specific item unlike AD ( ).

Cost: 2900(800) gold Recipe: + Stats: +100 ability power, +10% movement speed. Passive: +15 magic penetration, +35 movement speed out-of-combat. Active: Gain +30% movement speed for 4 seconds (45 second cooldown).

First I put in the build path but there too many AP items that give health already so I left the build path same as the current .