Your new spells look good
i like the Purification effect But the counter helix knockback looks weird because you do not update the x and y values for the position of the unit
if the unit is blocked it looks really strange
nah hard to explain what i mean , illl try to illustrate ^.^
b = blocker
k = knockbacked unit
- = nothing
would look like this
------------kk
-----------kbbk
>>kkkkkkbbkkkkk>>
------------bb
but better looks this way
-------------kkkkkkkkkkkk>>
-----------kbb
>>kkkkkkbb
------------bb