Can you cast spells (specifically non-Action spells like Super Mega Death Rocket) during your teammate's turn in 2v2 when the game is in a neutral state?

Ruling: Yes, players may play spells during their teammate's turn in 2v2, as long as the timing rules of the spell apply and the game is in the appropriate state.

Nuances:

• Actions can only be used to start a chain, never while a chain is already open (Closed State)
• Spells that are not Actions cannot be played during a showdown
• In a neutral state with no open chain, either teammate can play an Action during their team's turn
• Non-Action spells like Super Mega Death Rocket can be cast on a teammate's turn if timing rules allow