Akroma's Will
Instant
Choose one. If you control a commander as you cast this spell, you may choose both instead.
• Creatures you control gain flying, vigilance, and double strike until end of turn.
• Creatures you control gain lifelink, indestructible, and protection from each color until end of turn.
Antonio José Manzanedo
Rulings
Once you've announced that you're casting a spell, players can't take any actions until you've finished doing so. Notably, opponents can't try to remove your commander to change how many modes you may choose.
(wotc • 2020-11-10)
There's no extra bonus if you control more than one commander.
(wotc • 2020-11-10)
Once you've chosen both modes for the spell, it doesn't matter whether you continue to control a commander. This is true even if you somehow no longer control a commander as you finish casting the spell.
(wotc • 2020-11-10)
The commander you control doesn't have to be your commander.
(wotc • 2020-11-10)
Even though the card is named after a specific character, controlling any commander will satisfy its condition.
(wotc • 2020-11-10)
Rulings
Once you've announced that you're casting a spell, players can't take any actions until you've finished doing so. Notably, opponents can't try to remove your commander to change how many modes you may choose.
(wotc • 2020-11-10)
There's no extra bonus if you control more than one commander.
(wotc • 2020-11-10)
Once you've chosen both modes for the spell, it doesn't matter whether you continue to control a commander. This is true even if you somehow no longer control a commander as you finish casting the spell.
(wotc • 2020-11-10)
The commander you control doesn't have to be your commander.
(wotc • 2020-11-10)
Even though the card is named after a specific character, controlling any commander will satisfy its condition.
(wotc • 2020-11-10)