Command help 1.19

Clock
Bottom: /fill ~20 ~1 ~20 ~ ~1 ~ stone 0 replace redstone_block
Top: /fill ~20 ~-1 ~20 ~ ~-1 ~ redstone_block 0 replace stone

Scoreboard
/scoreboard objectives add torchdown dummy

Item
/give @a minecraft:torch 10 0 {HideFlags:1,display:{Name:You Light Up My Life,Lore:[Drop to use]},ench:[{id:34,lvl:1}]}

Detect dropped item:
/scoreboard players add @e[type=Item] torchdown 1 {Item:{tag:{HideFlags:1,display:{Name:You Light Up My Life,Lore:[Drop to use]},ench:[{id:34,lvl:1}]}}}

Execute Torch Spawner
/execute @e[score_torchdown_min=30] ~ ~ ~ /setblock ~ ~1 ~ minecraft:mob_spawner 0 replace {EntityId:FallingSand,SpawnData:{Tile:torch,Block:torch,Time:1},SpawnCount:100,SpawnRange:200,RequiredPlayerRange:600,Delay:0,MinSpawnDelay:1000000,MaxSpawnDelay:1000000,MaxNearbyEntities:100}

Kill spawner
/execute @e[score_torchdown_min=120] ~ ~ ~ setblock ~ ~1 ~ ai Play Particle /execute @e[score_torchdown_min=1] ~ ~ ~ /particle flame ~ ~0.5 ~ 0 0 0 0.01 1 force

Kill Torch
/kill @e[score_torchdown_min=120]

Kill grass, snow and torch
/execute @e[type=FallingSand] ~ ~ ~ /fill ~1 ~-3 ~1 ~-1 ~1 ~-1 air 0 replace minecraft:tallgrass /execute @e[type=FallingSand] ~ ~ ~ /fill ~1 ~-3 ~1 ~-1 ~1 ~-1 air 0 replace minecraft:snow_layer /execute @e[type=FallingSand] ~ ~ ~ /fill ~1 ~-3 ~1 ~-1 ~1 ~-1 air 0 replace minecraft:torch

JUST SPAWNER CODE:
/setblock ~ ~1 ~ minecraft:mob_spawner 0 replace {EntityId:FallingSand,SpawnData:{Tile:torch,Block:torch,Time:1},SpawnCount:100,SpawnRange:200,RequiredPlayerRange:600,Delay:0,MinSpawnDelay:1000000,MaxSpawnDelay:1000000,MaxNearbyEntities:100}