That's the joy for them: gaining knowledge, applying that knowledge against worthy opponents, adapting, gaining new insights, and evaluating how to change their behavior to do better next time
If you cant remove it, its all about nonartifact mana sources and Arcbound Ravager
For building your sleep deck, these Pokmon are essential: Puffluff (only available as a promo card in the Bisaflor event) Snorluff-ex Gloom Hypno Spheal Puffluffs attack is the only one that does not deal additional damage, and Hypno has the ability to put the active Pokmon to sleep
The Morphling Cycle While Morphling was the first creature with these characteristics, all these cards have the same design principles
You dont get to pick a new number, and you dont have to pay the cost again
This turns Food tokens into a flexible mana resource without sacrificing them, which is especially useful in decks that can create several Foods per turn