I may need a refresher course on google because I am still struggling. The only phrase I can find that accurately and precisely describes what I have done to the grid is 4, 5 hero (6) 4, 5, 2, 6.
Remove the hero and it gives an instruction.
The preamble implies all the words of the are cryptically represented - so verses containing other lines such as appear in the round version are not allowed.
I found one version of a rhyme that includes this specific string as the last line but also other words in the previous lines.
Difficult so say more as I don’t want to give the theme away.