Ninja tabi isn't the problem. Boots in general needs an overhaul.
My Idea:
**Ninja Tabi **- 45 Ms - 25 armor - 5% auto attack reduction - Active: Triples the auto attack redcution for 1 second. (15%) 90 seconds CD
Berserker's Greaves - 45 Ms - 25% AS - - Active: gain an additional 25% more attack speed for 2 seconds. 90 seconds CD
**Boots Of Mobility **- 35 Ms - Active: slightly pushes your champion forward (direction you re facing). CD is 90 seconds (dash range 150-250)
**Boots Of Swiftness **- 55 MS - Passive: moving ramps up your ms by 2% over time. Max Stacks is 4. (Slows/hard cc and staying still for more than a second depletes all stacks.) - Works in combat
**Sorcerer's Shoes **- 45 Ms - flat 15 magic pen - After Landing a spell on a champions your next spell does an additional 10(+5% ap) damage within the next 4 seconds. (CD is 15 seconds, additionally landing spells on champions reduce its CD by 1 second.)
Ionian Boots Of Lucidity - 45 Ms - Your vision wards have a slightly further sight range. - Active: reveal a small area around you. (350-500 range) 90 seconds cd
Mercury's Treads - 45 Ms - 25 Mr - Active: reduce the affects of cc by 40% for 1 seconds. 90 seconds CD