yugioh hole trap cards Yu-Gi-Oh! - Break Off - SDSB-EN037 - Common - 1st Edition Common Activate only when your opponent Special Summons 2 or more monsters face Traptrix Trap Hole Nightmare |

not the reactive Rewind style, so this is probably fine, but you can be sure that unwind was heavily vetted to ensure it wasn't broken

Decide what is worth it for you

The error was when she failed to apply the effect from Archon of Emeria, so that's the point we back up to, which is after she already (legally) paid 2 life

Now might be the ideal time

If that happens, you just found yourself a great story to tell your friends and an expensive card that you can sell or add to your collection

Land destruction might not seem very important, and Ravager Wurm's ability might not let you blow up a Gaea's Cradle, but Commander tables are littered with lands that are headaches and that you might really want to destroy