yugioh master duel ruin and demise deck Complete Custom for Yu-Gi-Oh! YouTube

Suspended cards are in exile, which means theyre outside the game and cant be targeted without some specific mechanic that says you can

Expert Interview Chris Frey

If Alpine Moon isnt good, its a bulk rare

Essentially, you can sacrifice one of your card still in the deck in order to stop your opponent from doing any Special summoning for the whole turn or whatever else you need at that time

Some novelty replicas may have decorative use, but they are not investments

It specifically states you can use this card during your first turn or on a Pokmon that was put into play this turn. Now at the time this card was released I believe the newer rule about not being able to play supporter cards on your first turn if you take the first turn was not in place