Metro only (well usually!)
Horse < 6 career runs
No one knows much about it ..... Definitely NO young horse hype
No wins
Trainer must have given a clue as to it's ability by running it in a decent Metro race in it's previous campaign (mebbe even a Group Race)
On the limit weight (Off everyon'e radar !!)

AND either .....

2nd up, or 3rd up after a poor first up / second up performance with possible excuses (hvy track, raced erratically, vetted), I like it when the horse has a tongue tie on which indicates it may have choked up, or it get's blinkers first time ..... BUT ..... there must be written evidence in the narrative of the form guide for a possible excuse (we don't just back horses with gear changes) ..... As you and I know darkydog2002, the unwashed have info handed to them but dont know how to use it.

or .....

Increasing in distance at it's 2nd / 3rd start whilst continuing to maintain it's "poor form".

That's essentially the KTM .....