'''Unbuildable'''. Clear Reward for [[Spring 2016 Event#E-4|Spring 2016 Event E-4]] (Hard Only) and [[Spring 2016 Event#E-5|E-5]] (Easy/Medium Only). | '''Unbuildable'''. Clear Reward for [[Spring 2016 Event#E-4|Spring 2016 Event E-4]] (Hard Only) and [[Spring 2016 Event#E-5|E-5]] (Easy/Medium Only). |