New Requirement?

I was training my ranged attack rank D and noticed that there was a new requirement. It seems to require only one count and gives 20 points. It's 'receive a powerful attack from a powerful enemy' I believe that I got the training from being hit by a magnum shot from a goblin archer (weak for me). I don't think that this was present in previous ranks, but just to make sure could someone check this? Could someone also check that the new requirement is correct?

Its been there since forever.

Then... why hasn't it been on the wiki.. since.. forever?

... I think I went through that wrong. I must be brain dead QQ