Loyal Subordinate
Creature — Zombie
Menace (This creature can't be blocked except by two or more creatures.)
Lieutenant — At the beginning of combat on your turn, if you control your commander, each opponent loses 3 life.
Zombies work best when they're fed appropriately, so it's prudent to let them eat on the job.
Tomasz Jedruszek
Commander 2018 (C18)
• #16Rulings
The lieutenant effect happens only once each combat, even if you somehow control multiple commanders (perhaps because you have two commanders with a partner ability from the Battlebond™ set).
(wotc • 2018-07-13)
If you have multiple commanders, you need to control only one for the lieutenant effect to happen.
(wotc • 2018-07-13)
If you don’t control your commander as the lieutenant ability resolves, you won’t get its effect.
(wotc • 2018-07-13)
Rulings
The lieutenant effect happens only once each combat, even if you somehow control multiple commanders (perhaps because you have two commanders with a partner ability from the Battlebond™ set).
(wotc • 2018-07-13)
If you have multiple commanders, you need to control only one for the lieutenant effect to happen.
(wotc • 2018-07-13)
If you don’t control your commander as the lieutenant ability resolves, you won’t get its effect.
(wotc • 2018-07-13)