setblock 22 235 -200 red_stained_glass

summon item 22 236 -200 {Motion:[0.0,0.5,0.0],PickupDelay:32767,Tags:["no","boss_key"],CustomName:'{"bold":true,"color":"red","text":"Boss Key"}',Item:{id:"minecraft:coal",count:1,components:{"minecraft:item_model":"minecraft:keys/last_gladiator_key"}}}

playsound atmos:chain_1 master @a ~ ~ ~ 10 1 1
playsound entity.illusioner.prepare_mirror master @a ~ ~ ~ 10 0.9 1
playsound entity.illusioner.prepare_mirror master @a ~ ~ ~ 10 0.9 1
playsound entity.illusioner.prepare_mirror master @a ~ ~ ~ 10 0.9 1