We try to have a full product offering for our fans, and the increased popularity of the Fat Pack seems to have gobbled up the demand for a fourth Magic product (after Boosters, Tournament Packs, and Theme Decks)
Decide which cards to include and in what quantities
You can have up to 4 cards with the same set number (found in the bottom-right corner) in your deck
Here is the Shift rule text from Aladdin Heroic Outlaw: Shift 5 (You may pay 5 to play this on top of one of your characters named Aladdin.) That means he can be shifted onto any Aladdin character, regardless of their cost, ink, or version
Trading cards had a long tradition of having rarities that appear at a rate of less than one per pack
Even if the enchanted player doesn't attack with any creatures during combat, they'll still get a postcombat main phase and Shadow of the Second Sun's ability will still trigger