Reyhan allows your creatures to lend each other their +1/+1 counters when they die, which can help to prevent lost time and mana investments
Promo cards are special cards that can not be obtained through opening booster packs, but instead through in-game events, which may reward promo packs, Premium Pass benefits, and completing certain missions - usually exclusive to Premium Pass holders
The deck gives fresh life to charge counters which were rarely used after the Mirrodin block, but return strong with the station mechanic
If you already dont like the physical form of the game, playing it online is not going to change your mind
As for the landers themselves, deciding when to crack them is an important skill test youll usually want to wait until youre out of impactful on-curve plays, rather than risk skipping turns to accelerate out a huge threat which gets immediately Gravkilled