You use it before the game begins. After you put the Brainstorm
into your hand, you’ll shuffle the rest of your deck. Then you’ll draw the normal 3 cards at the start of the game. This means you’ll start the game with 4 cards in hand (Brainstorm plus the 3 you draw). You’ll still draw a card at the start of your first turn.
Can this ability trigger more than once in a the same turn?
No. You play your third action in a turn only once.
I have a team of all Autobots, including Captain Wheeljack in bot mode. I play Brainstorm
, and as the first action, play Confidence
. Do I play my second action for Brainstorm now, or do I resolve Confidence first and play an action via Confidence? Either way, this will trigger Captain Wheeljack’s "When you play your third action" ability. Do I draw the card for that immediately, or do I wait until all the actions played via Confidence and Brainstorm have resolved?
first (including possibly playing another action), then play your second action for Brainstorm
. After that’s done, all abilities that triggered while Brainstorm was resolving happen in an order of your choosing.