In what way do "refinement" processes enhance cards in Riftbound?

Refinement processes in Riftbound are designed specifically to enhance the effectiveness of existing cards. By engaging in refinement, players can optimize individual cards, increasing their abilities, power, or overall utility in gameplay. This enhancement allows players to tailor their deck to better fit their strategies and improve their chances of success in battles.

The other choices offer concepts that do not align with the mechanics of refinement. For instance, degradation or lowering of abilities contradicts the purpose of refinement, which is to strengthen cards rather than weaken them. Additionally, rotating card types does not reflect the improvement aspect that refinement embodies, nor does selecting abilities at random, which suggests a lack of strategic enhancement. Therefore, the refinement process serves as a means to systematically enhance gameplay by upgrading existing cards and making them more effective in a player's arsenal.