need help fine tooning a spell

[archkyle]

the spell i created is a summoning spell. but when i reuse the spell, it creates even more of the specified summon creature instead of replacing them. how do i make the spell replace the old units upon recast?

 

[istar]

what is the base ability?
use feral spirit, it replaces...i think..
else use trigger to remove them

 

[archkyle]

the base ability is summon water elemental.
which trigger category should i use? event, condition, or action?

 

[istar]

i pretty sure water elemental dont replace
easy way out is use feral spirit instead
else you need a trigger such as
event unit cast spell
condition spell is blah
action-if unitgroup is not empty, kill units in unitgroup
store summon units in a variable unit group

 

[archkyle]

awesome, thanks man!