If you dont mind using external tools, then Reddit user maxwell1755 created a useful spreadsheet that allows you to keep track of what cards you own and which cards you need, including a handy Mew Tracker table that calculates the total number of missing cards in each pack, and also shows which pack has the highest likelihood of containing a new card
If your choice somehow ends up with an instant or sorcery card as the back face of Werewhat, Werewhat would be unable to transform away from its daybound side, so it would remain daybound even if it's night
You can discard 1 card, then target 1 face-down monster your opponent controls
Every single V-UNION that has come out in English has been in a promo box where all four pieces are the guaranteed promo cards
Dragonite can be obtained from Mega Shine pack in the Mega Shine set
You need redundant ways to deliver your gifts and a keen political mind