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.)

每当你攻击时，若当前是本回合的首个战斗阶段，则重置所有进行攻击的生物。它们获得先攻异能直到回合结束。在此阶段后，额外多出一个战斗阶段。
选择身世（你能用一个身世当作第二指挥官。）