The best replacement for curses is blessings.

The best alternatives to curses are rated as following:
★★★★★  blessings
★★★★  spells
★★★★  ncurses
★★★  hexes
★★★  prayers runescape
★★  prayers
★  bad luck spells
  urwid
  love spells

Your alternative for curses is not listed? Suggest!
Speaking about curses, one probably shouldn't forget about mummies.

Other search terms related to curses and their ratings are:
★★★★★ mummies
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