sv6 pokemon card list Mask of Change The 10 Most Valuable Pokémon

Gravecrawler isn't once per turn, making it trivial to loop it

Lifegain decks often struggle to find enough ways to use their life as a resource, and Karlov lets you effectively do so without actually losing the life

Had to go back and separate those ones card by card): Mnemonic Wall/Archaeomancer + Crystal Shard/Erratic Portal/Conjurer's Closet/Cache Raiders/Followed Footsteps + Time Warp/Time Stretch/Walk the Aeons = infinite turns

The useful part is separation

Typically these will be in your sideboard, but depending on the meta, your deck, and what the card does, sometimes you can be extra hateful and make it work mainboard