Karlach, Fury of Avernus

Whenever you attack, if it's the first combat phase of the turn, untap all attacking creatures. They gain first strike until end of turn. After this phase, there is an additional combat phase.
Choose a Background (You can have a Background as a second commander.)

每當你攻擊時，若當前是本回合的首個戰鬥階段，則重置所有進行攻擊的生物。它們獲得先攻異能直到回合結束。在此階段後，額外多出一個戰鬥階段。
選擇身世（你能用一個身世當作第二指揮官。）