The Un-Sets, imo, are really something that ought to be kept around as they offer freedom, creativity and forward/very forward thinking
The default configuration of the gradient tool prevents using it more than once
Until end of combat, you don't lose this mana as steps end
Each deck set includes 1 ready-to-play deck of 100 Magic cards (2 Traditional Foil Legendary cards, 98 nonfoil cards), a 2-card Collector Booster Sample Pack (contains 1 Traditional Foil or Nonfoil alt-border card of rarity Rare or higher and 1 Traditional Foil Borderless Uncommon card), 10 double-sided tokens, 1 deck box (can hold 100 sleeved cards), 1 Life Wheel, 1 strategy insert, and 1 reference card
Fun This last criteria is less concrete but in many ways the most important part of a discard design
But myr, who also play their part in some wicked combos, give the whole thing a beaky WALL-E soul