Talk:Viper X/@comment-24396074-20140617061357/@comment-25158100-20140826145848

Crusader,is a close range unit,also it depends on the level and efficiency of the unit(like Viper  X can hit air and crusader cannot plus Viper X can put Status Effect:Corrosion)

But IF THE VIPER X HAS HIGHER LEVEL THAN CRUSADER,thats the other thing,that matters on upgrade time.