These are reprints of some popular legendary creatures from across Magics history
8: You get an emblem with "Whenever an opponent is dealt combat damage by one or more creatures you control, if that player lost less than 8 life this turn, they lose life equal to the difference." Legendary Planeswalker - Lolth Ratadrabik of Urborg Vigilance, ward Other Zombies you control have vigilance
What sets Unfinity apart is that a lot of its cards are legal to play in Commander and other eternal formats
Azlask, the Swelling Scourge $19.50 Annihilator is a mechanic that, while generally balanced in the past, many players flat-out hate
#15 WotC themselves draw a distinction between 'design' and 'development', where design is making cards and development is adapting those cards to the limited / standard environment
Are they being prepared al dente