Generally speaking, these sets have always been a way for Wizards of the Coast to reprint essential cards for non-Standard formats
Be careful with this last one, however, as it will set the receiving player back to the stone age
By using double-sided Sagas and cards that transform into them, you can keep value on the board
A reprint of this Magic: The Gathering card seemed extremely likely, so everyone was surprised when Sliver Hive was not included in the precon
Sarkhan being part of the dragon set was predicable, and Im sure some folks may not like that level of predictability: but he also opens up some options for building out dragon-based Jump Start decks
When Kairi dies, your two options including bouncing any number of nonlands permanents with a total mana value of 6 or less or milling six cards and returning up to two instants and sorceries from your graveyard to your hand