Let us talk about the Spell Hammerstrike. In past a good online-friend of mine uses this spell in 3000-4000 trophy range and run fine with this. Current max Level is 18 and it deals 4.441 blunt damage. This is enough to one hit boosted Knight, boosted Archer, Paladin, Froster (because of current bug which ignores blunt resistance), Gargoyle, Pyromancer, boosted Arblaster and Mortar.
extreme quick cooldown with 7 seconds = good against waves
also with short range the spell can hit 2 nearby towers if king stand on good position between them
blunt damage is a weakness of most towers
only instant spell
I like it to use my Hammerstrike against new boosted Arblaster waves or to finish boosted Wolf after using Blizzard against them. It is like an instant spell for Bladestorm, when I use it against Barricades and Blockades. Nice extra is that I can onehit Knights, which spawns after death from boosted Mummy.
Do you know good combinations or nice features for Hammerstrike?