It is interesting that both Minions have the shared mechanic of you needing to pay an upkeep cost or they deal damage to you
There are also certain cards that only affect Pokmon-ex, nearly always negatively
Andril, Narsil Reforged This version of Andril only comes in borderless art, and for good reason its forged from the shards of Narsil, the broken sword that Isildur used to cut the One Ring off of Saurons finger
But I prefer my idea: instants and sorceries with an alternative form of scavenge that lets you turn them into Witherblooms ubiquitous Pests
This card is critical to any Magical Brooms deck, enabling you to play them for one cost less while also enabling you to return them to your hand whenever they would be banished in a challenge
Each holds different cards, and within some, you may even find a rare card that's unique in looks, gameplay effects, or both