The Un-Sets, imo, are really something that ought to be kept around as they offer freedom, creativity and forward/very forward thinking
Fun This last criteria is less concrete but in many ways the most important part of a discard design
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
The default configuration of the gradient tool prevents using it more than once
But myr, who also play their part in some wicked combos, give the whole thing a beaky WALL-E soul
Any "as [this creature] enters" or "[this creature] enters with" abilities of the targetted creature will also work