Making rain fire spell system

[emil23]

Hi i need help with my map, its map with traps, so i want rain fire to be casted on area for like 10 sec then player has to wait once it ends then again its used on same area. How can i do this

 

[Devalut]

Four Things Required for this:

• Trigger for when this effect should take place
• Periodic Event Timer
• Dummy Caster
• Edited Rain of Fire Ability: Data - Duration 10.00 seconds - Zero Mana Cost

Once the event occurs where the rain of fire should start casting, Order a dummy caster to start casting your Edited Rain of Fire Ability along with starting the periodic timer event to prepare the next cast.