Can I show my cards to my teammate in 2v2? If not, can I say it out loud?

Ruling: You may show your cards to any player you want at any time. This will not trigger any effects that say "on reveal" since "Reveal" is a specific game mechanic.

Nuances:

• Showing cards voluntarily is different from the "Reveal" mechanic
• The "Reveal" mechanic refers to card interactions that reveal to all players and trigger specific effects