The best replacement for ignite is ambit.

The best alternatives to ignite are rated as following:
★★★★★  ambit
★★★★  exhaust
★★★★  barrier
★★★  jet
★★  force weapon
★★  jet stroller
★★  firespray
★★  north american power
★★  teleport
★  smite
★  cleanse
★  ambit energy
★  pecha kucha
★  idera
★  nike slingshot
★  sasquatch
  stream energy
  viridian
  mission craze
  heal
  firespray demon's souls
  5linx
  lava bow
  sql sentry

Your alternative for ignite is not listed? Suggest!
Speaking about ignite, one probably shouldn't forget about stream energy.

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



Google Trends

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ignite
ambit
exhaust