You also get a nice proliferate loyalty ability to boost multiple planeswalkers at once, and a great final ability to take an extra turn
Maybe this exact method of release wouldnt be possible for larger UB sets to come, but the ideas of matching crossover IP to other sets in their release window, and of spotlighting their Universes Within versions, should have been carried over more zealously
Pok Ball and Professor's Research are phenomenal cards in every deck, as they provide a phenomenal amount of consistency and allow players to have the cards they need during every turn
Each of these legendary artifacts discounts spells of the relevant color, provides a useful passive ability, and has an activated ability that synergizes with its passive ability
It gets better when you're dealing with a 187 creature, but it's fine even when all you're doing is saving your best guy from a removal spell
This means that not only can you access additional cards, but you can reactively play the majority of the spells in your deck during an opponent's turn