Rust spell is a spell which is available in dark spell factory.The features of this spell are given below:
1)Rust spell will work on defence buildings only.(not on troops and not even on walls)
2)Rust spell will make defence building slow and also decrese their fire power also due to rusting.
3)This spell will have infernos as favourite target on which if we put 3 spells then they will not be able to stop the healing from spell and healer.
3)This spell should cost above 100 dark elixir.
4)Level of the spell will not affect the spell from stopping the spell's ability to make infernos to stop healing(i mean only 3 spells will be needed for their special ability like earthquake spell which need 4 spells no matter of what level).
IF YOU LIKE MY IDEA THEN PLEASE REPLY ME.I THINK THIS SPELL WILL GO BOOM BECAUSE EVERY TH 10 and above CLASHER WILL LIKE IT

