The best replacement for rinnegan is sharingan.

The best alternatives to rinnegan are rated as following:
★★★★★  sharingan
★★★★  byakugan
★★★★  ems
★★★  eternal mangekyou sharingan
★★★  mangekyou sharingan
★★  genjutsu
★★  sage mode
★★  geass
★  mokuton
★  naruto
  sharingan naruto
  sasuke ultimate sharingan

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

Other search terms related to rinnegan and their ratings are:
★★★★★ sharingan
You have in mind a companion for rinnegan and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of rinnegan in all years. Click on graph for more.
rinnegan
sharingan
byakugan