Ringing Challenge 
You clang your ikon against a weapon, shield, or the ground, emitting a shock wave that deals (max(1,(floor((@actor.level - 2)/2))))d4[spirit],(max(1,(floor((@actor.level - 2)/2))))d4 sonic damage to all creatures in a 30-foot cone or 15-foot emanation (fortitude save). A creature that critically fails its saving throw is Deafened for 1 minute.
At 6th level and every 2 levels thereafter, the damage increases by 1d4 spirit damage and 1d4 sonic damage.