The best replacement for deathtouch is indestructible.

The best alternatives to deathtouch are rated as following:
★★★★★  indestructible
★★★★  first strike
★★★★  regenerate
★★★  shroud
★★★  double strike
★★  hexproof
★★  prevent all damage
★★  prevent damage
★★  protection
★★  protection from creatures
★  deathtouch
★  planeswalker
★  trample
★  deathtouch mtg
★  deathstrike
★  indestructible magic
  indestructible mtg
  first strike mtg
  phytohydra

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Speaking about deathtouch, one probably shouldn't forget about first strike.

Other search terms related to deathtouch and their ratings are:
★★★★★ first strike
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Google Trends

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deathtouch
indestructible
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