Grimdark Fiddlesticks

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.

What then, does this describe? A happy-go-lucky bedtime story for kids? He's a literal scarecrow murderer -- everything about him is supposed to imbue creepiness and fright