yugioh card gauntlet Launcher [LTGY-EN045] Ultimate Rare your battling monsters DEF becomes double its original DEF until the end of this turn. Yu-Gi-Oh! Wiki - The Phantom

Return up to two creature cards of that type from your graveyard to the battlefield

You definitely do not want to be stuck with no cards in hand and the ability to not gain cards

So getting into the strategy already, I would try and get Salamence onto the bench as soon as possible so then if you have some other powerful cards in your deck, especially if you have a fire and water type deck since those are the two energy types Salamence needs to execute its moves you can rotate between Pokemon frequently to better dominate your opponent's Pokemon

How long do I need to wait

Naturia Snail: So since I already reviewed Snail, there really isn't anything else that I can say on it lol