serena pokemon card full art Silver Tempest (SIT) #193 Uncommon Card Type 2022 Pokémon Serena Trainer Card

It also provides a wincon for discard decks, because its very common for that strategy to have lots of ways to discard cards but no plan for advancing the board

A "poly" artifact is an artifact that has an activated ability, but you didn't have to tap to use it

If you want to pull one of these, that's your desired product

They love to improve the decks they already have

There are exceptions though, like the three common summons (Summon: Fat Chocobo, Summon: G.F

Mount Doom, a red-black land that hurts you when it makes mana, can also hurt your opponents and act as a board wipe if you sacrifice it and a legendary artifact (like The Ring)