1 effect during your opponent's turn
That said, with such a scarcity of common payoffs, drafting blue-red comes with some risk
At the end of your Battle Phase, if your opponent has not taken any battle damage this Phase: You can inflict 300 damage to your opponent for each "Battlewasp" monster in your GY
Choose a commander you enjoy, define a clear strategy, add 7-10 win conditions, add the core components (draw, ramp, removal), build a 36-38 land mana base with color fixing, then playtest and tune the ratio
its been reprinted a ton of times
711.9a If a checklist card is used, the double-faced card it represents must be set aside prior to the beginning of the game (see rule 103.1a) and must be available throughout the game