/setblock -262 0 -221 repeating_command_block{Command:"execute at @a[nbt={Inventory:[{Slot:100b,id:\"minecraft:leather_boots\",tag:{display:{Name:'[{\"text\":\"✠ \",\"color\":\"gold\",\"italic\":false},{\"text\":\"Ultra botas definitivas\",\"color\":\"dark_purple\",\"bold\":true},{\"text\":\" ✠\",\"color\":\"gold\"}]'}}}]}] run effect give @a[distance=0] minecraft:jump_boost 1 2 true",auto:1b} replace
/setblock -263 0 -221 repeating_command_block{Command:"execute at @a[nbt={Inventory:[{Slot:100b,id:\"minecraft:leather_boots\",tag:{display:{Name:'{\"text\":\"Ultra botas de salto\",\"color\":\"green\",\"bold\":true}'}}}]}] run effect give @a[distance=0] minecraft:jump_boost 1 1 true",auto:1b} replace
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