After a spell resolves mid-chain and you draw a card, do you get priority to play the drawn card before the next item on the chain resolves?

Ruling: Yes, both players must pass priority for the next item in the chain to resolve. After Discipline resolves and you draw En Garde, your opponent (who has priority first since their Void Seeker is next) must pass, then you get priority to play En Garde before Void Seeker resolves.

Sequence:

• Opponent plays Void Seeker, passes priority
• You play Discipline in response, pass priority
• Opponent passes priority
• Discipline resolves (unit gets +2, you draw En Garde)
• Opponent has priority (their spell is next on stack), passes
• You have priority and can play En Garde
• If both players pass, Void Seeker resolves

Nuances:

• Both players get a priority window after every item in the chain except for the last item