You will be allocated a percentage of your largest recent Prerelease, which will vary by region and is based on relative Commander popularity
We can see this through the introduction of a guaranteed SR item card (which did not exist in Scarlet & Violet boxes), and an increase in the standard ex hit rate in Inferno X
Once per turn, during the Battle Phase, if you control this Synchro Summoned card (Quick Effect): You can Special Summon 1 "Superheavy Samurai" Monster Card from your GY or face-up Spell & Trap Zone, then you can place this card in your Pendulum Zone
Finding your preferred sleeve texture helps you fine-tune your shuffle feel and card handling
Howerver, running the old cocoon of evolution plus petit moth is pathetic, because they take too much time to summon the moths
You don't need 2 stardust dragons