the Harbinger of Doom
Standing still or channeling for 1.5 seconds grants Fiddlesticks bonus movement speed, that lasts for 1.5 seconds once he starts moving. Being immobilized will not trigger Dread, and will reset the timer.
After 5 seconds of not moving, Fiddlesticks will stand completely still and become a scarecrow.
What exactly happened inside that chamber remains unknown. No champion came to represent Zaun that day in Summoner's Rift. Only silence echoed back from repeated knocks on the chamber door. The first apprentice who entered was cut down immediately by an unearthly scythe. What few who followed and survived were driven mad by fear, mere husks of men gibbering about crows and death. Afraid of the evil even Istvaan could not control, the League sealed all exits to the chamber, hoping they could contain what they could not destroy. Years went by, but the wooden figure within never moved save to slay any foolish enough to enter. Seeing no recourse to reclaim the chamber, the Council instead devised a use for Fiddlesticks: executioner. While he comes to life and seemingly abides by the rules of summoning in the Fields of Justice, what he awaits inside his chamber is unknown. His unmoving face yields no clues, and his scythe stands ready to strike down any who stand before him.
Those who say 'you have nothing to fear but fear itself' have not yet felt the crows.