If you were to do, If you try to, If … happens, Should there be
Structure
Verb[volitional] + ものなら/もんなら + Phrase
(A) [volitional] ものなら (B) is a phrase expressing the opinion of the speaker that possibly if situation (A) happens, the negative result (B) will follow.
In (A), phrases showing extreme examples of something like でも、万が一 or expressions like ちょっと、うっかり、もし are common. (B) often ends with phrases of conjecture, like かもしれない、だろう、はず.