If you do, trash as many cards from your security stack as you can
At full strength, Stardust Dragon has no shot against the current best deck in the game (as of writing), so make sure have as many disruptions and hand traps as possible
ST19-13 U Digimon Lv.6 ShinMonzaemon Color Yellow Cost 12 DP 12000 Digivolve Cost 1 Yellow 4 from Lv.5 Form Mega Attribute Vaccine Type Puppet Card Text 1 [Special Digivolution Condition] [Digivolve] Lv.5 w/[Monzaemon]/[Numemon] in name: Cost 3 [Effect] Armor Purge (When this Digimon would be deleted, by trashing this Digimon's top stacked card, it isn't deleted.) [On Play] [When Digivolving] By placing 1 level 5 or lower card with [Numemon] in its name or the [Puppet] trait from your trash as this Digimon's bottom digivolution card, Recovery +1 (Deck)
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The best part about this spell is its a quick effect, which means you can use it in response to (1) your opponent targeting a Vyon, Stratos, or Faris with imperm, (2) in response to Maxx C, (3) at the end of your opponents turn, or (4) during your own battle phase to push for lethal (example being you swing in for 1000 with Shadow Mist, pop mask change, make Dark Law, Shadow mist puts Honest Neos in your hand, swing for another 2400 + 2500)