ものなら

if ... can; if ... were possible

→ 物

phrase Rare #30,286

if ... can; if ... were possible Used after a verb in the potential form to mean “if you can,” often with a challenging or provocative tone. It can also follow a noun or noun-like phrase to mean “if it is ...” or “if ... were possible.”

JA: できるものなら、私を止めてみな。

EN: If you can, try to stop me.

やれるものならやってみな！！

If you think you can, go ahead and try!!

— M - Eine Stadt sucht einen Mörder (1931)

その問題が解けるものなら解いてみろ。

If you think you can solve that problem, go ahead and try.

この事誰かに言おうものなら、絶交だからね。

If you tell anyone about this, we're through.

呪いが消えるものなら私もそうしよう.

If the curse can be lifted, I'll do that too.

— もののけ姫 (1997)

その伝言が重要なものなら彼に電話しなさい。

If the message is important, call him.

彼が生き返るものなら

If only he could come back to life.

— シカゴ (2002)