When the coins were found back, the people began to rebuild their towns and so the town Build-Up existed. The people Sealed the coins and the sages, so these would never cause trouble again (BuildUp). These things made the Evil Trio really angry, 2 times defeated! Without the power of the coins and the strong magic of the Evil Sage (the evil sage lost his power because his power was connected with the elemental coins), they couldn't cast curses like this on the world again.