With a live editor, its easy to correct them without going back and forth between separate design windows
Quantity: The number of copies of each card present in the deck
adjust for dead hands or weaknesses
Creatures will all look similar, with their main differences being casting cost, type, ability, and power and toughness
With Purrely youre going to want to do two things as soon as possible: farm for Purrely-themed spells such as My Friend Purrely and Stray Purrely Street, to get as many of the quick-play spells in hand as possible, and use the effects of the base monsters Purrely and Purrelyly to quickly Xyz summon key monsters such as Epurrely Beauty, Happiness and Plump
I wouldn't use any "sticky pull tabs" on the sleeves