First, it is very efficient
Just make sure one of those enchantments is Solemnity to keep everything coming back as often as you need
It just is weak to removal of any kind and has four devotion to White to cast
Personally, I want to combo it with Intruder Alarm and creatures that make tokens when you draw your second card, such as Emrakuls Messenger or Detective of the Month
But Nim Deathmantle (and cards like Angelic Renewal or Lifeline before it) push for a slightly different playstyle you protect your creature(s) already on board by reanimating them whenever they might die, punishing the opponent who removed them with a fresh round of triggers
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