Important Items and Bonus during Events

This is for those who first started the game since a few days, months, and... maybe years later? This is to prioritise which items can be used for future later and which can be dropped during shows. Not to mention, bonus during events since 1st Anniversary Update.

If you have better explanations about the items and the events, either in this post or another topic under Project Sekai.

Items
Prioritised Items

• 2-star card
• 3-star card
• Cover Card Voucher
• Crystals
• Bonus Energy Drink (S)
• Stamp Voucher
• Practice Score (Intermediate)
• Music Card
• Skill Up Score (Intermediate)
• Virtual Coins
• Wish Drops (future update)
• Wish Pieces
• Character Cover Card
• Bottle of Feelings

Uncommon/Rare Drops

• Miracle Gem
• Magic Cloth
• Magic Thread
• Magical Seed

Common Drops

• Type Gem
• Type Charm
• Coins

Events
1st Anniversary Update

• 3 certain cards from gacha will be counted as an additional 20% bonus.
• Additional bonus from Mastery Rank will be counted since Rank 1 (Every Rank stacks up).

2nd Anniversary Update

• Virtual Coins will be removed from the Event Exchange.
• The price for the Cover Card Voucher will be increased 3x than the original price.
• The price for Magic Cloth and Magic Thread will cost half of the original price.

3rd Anniversary Update

• Additional bonus for Mastery Rank 0 (4-star and Birthday/Anniversary).

World Link

• The event is separated into chapters. Each chapter focuses on a certain character. There is a Ranking for each character while having the usual event Ranking.
  
• In the event, it will have Main unit and Support unit. The Main unit will be the one having them. The Support unit will have focus characters that are not in Main unit.
• Event Exchange has 2 types, Unit Exchange and Character Exchange. During the event, it will drop Character Event Coins. In the exchange, it has the option of exchanging Character Coins into Unit Coins for Unit Exchange.

I know most players want certain cards but I want to max out a few things since it has become the most grinding game I have ever experienced. Mainly, maxing out Decorations and Cards’ Talent. Depending on the amount of Crystals you earned since the start of the game, what cards are you planning on? Or... what limited cards are you getting on?