Lux
One Crystal Lux (4 Crystal, 3 Predator) destroyed 5 times in a row 6 Mage, 4 Ocean, 2 Mountain, 2 Warden (all units 2 stars, full items Brand, mage Annie). Lux inflicted almost 9.000 dmg. Imagine what would do 2 stars Lux. Very hard to get 4 Crystal but once you have them it's a win and this is OK but that 1 star Lux...
Seriously no matter what synergies you have if you get 2 stars Lux ? I think the same thing for 2 stars Singed and Zed with the right items.
Is this imbalance or you consider that is hard to get 2 stars level 5 units ?
Don't you think that Lux has too much damage ? I mean she already has a big bonus (+2 Class/Origin) and mana refund for a kill.