Awaken 4/55 GR or Magik?

So I got GR from the anniversary 15k 5* shards. Used the 2-3 and 3-4 gem to rank up GR. Now I have to decide if I should awaken one of them or not. I can put in 100 sig stones. Running MD2 currently, no plan to go back to MD4 as I have better use of the mastery points.
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Magik befits a lot from it, and it's critical if you want to use her defensively.
That said - it might be more worth saving it for the likes of Dr Voodoo or Doom but I'm generally opposed to "save it for a MORE god-tier champion" advice on AGs.