Do you need to have 6 energy before attempting to play Brazen Buccaneer, or can you have 4 energy and discard a card to meet the play requirements?

Ruling: You can play Brazen Buccaneer with 4 energy plus a card to discard. Cost is determined partway through playing a card, not before you start playing it.

Sequence:

• Begin playing Brazen Buccaneer
• Cost determination happens during the play process
• The "as you play me" ability applies during cost determination
• Discard a card to reduce the cost by 2
• Pay the reduced cost of 4 energy