The best replacement for ascension is chi brew.

The best alternatives to ascension are rated as following:
★★★★★  chi brew
★★★★★  assumption
★★★★★  dominion
★★★  call of the dead
★★★  chi brew 5.4
★★  thunderstone
★★  chi brew mistweaver
★★  ascent
★  shangri la
★  drygore
★  thunderstone advance
★  doomsday
★  kino der toten
★  accession
★  american pitbulls
★  power strikes 5.1
★  too cool
★  resurrection
★  shadow era
★  seismic
★  power strikes
★  mage the awakening
★  awakening
★  god of war 3
  summoner wars
  zaryte
  solforge
  hour angle
  dutchtown
  nightfall
  tomb raider
  chi brew windwalker

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Speaking about ascension, one probably shouldn't forget about burning tongues.

Other search terms related to ascension and their ratings are:
★★★★★ burning tongues
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