〜ものなら mono nara
〜ものなら（mono nara）means “if you (possibly) could… (challenge/dare or near-impossible wish)”. Attaches to a potential-form verb to suppose something hard or near-impossible. Formation: V（可能形）＋ものなら
if you (possibly) could… (challenge/dare or near-impossible wish)
N2Formation
V（可能形）＋ものなら
Explanation
Attaches to a potential-form verb to suppose something hard or near-impossible. Often a challenge ('do it if you can!') or an unrealistic wish ('if only I could…'). The same verb is frequently repeated: 〜られるものなら〜たい/〜てみろ.
Examples
Note
Distinct from 〜ものなら meaning '(dictionary form)+ものなら=if such an undesirable thing happened'. This N2 entry is the potential-form 'if you could' usage.
FAQ
〜ものなら — what does it mean and how is it used?
if you (possibly) could… (challenge/dare or near-impossible wish). Attaches to a potential-form verb to suppose something hard or near-impossible. Often a challenge ('do it if you can!') or an unrealistic wish ('if only I could…'). The same verb is frequently repeated: 〜られるものなら〜たい/〜てみろ.
〜ものなら — how do you form it?
V（可能形）＋ものなら
〜ものなら — any usage notes?
Distinct from 〜ものなら meaning '(dictionary form)+ものなら=if such an undesirable thing happened'. This N2 entry is the potential-form 'if you could' usage.