on rightclick with disc named "Clicker Lvl 1":
  set block to red wool
  give to player stone or sandstone or wood planks or oak planks or cobblestone
on leftclick with disc named "Clicker Lvl 1":
  open chest with 3 rows named "&7Shop" to player
  format slot 0 of player with chest named "&7Clicker &2Lvl 2" to close
  give to player disc named "&7Clicker &2Lvl 2"
  stop