Not many where it is possible:
Dead or Alive
Pyramid Quest for Immortality
Finer Reels of Life
GoT 243 Ways (need to select x3 - x5 feature to be possible)
that is pretty much it.
(there are some others where you could get it, but would technically be on multiple spins within same bonus round)
Would it not also be possible on 300 shields? Best win being 5 wilds at x300 stage 4 10.00x300=3,000£ which is more than 10,000x bet. Based on 25p stake.