Bontu's Last Reckoning
Sorcery
Destroy all creatures. Lands you control don't untap during your next untap step.
To the last, Bontu wanted only to be first among the God-Pharaoh's subjects.
Victor Adame Minguez
Rulings
No lands that you control will untap during your next untap step, even lands that aren’t tapped as this spell resolves. This includes lands that enter the battlefield after this spell resolves.
(wotc • 2017-07-14)
If more than one spell says that lands you control don’t untap during your next untap step, the effects will all wear off during that untap step. You’ll untap lands you control during your untap step after that one.
(wotc • 2017-07-14)
Rulings
No lands that you control will untap during your next untap step, even lands that aren’t tapped as this spell resolves. This includes lands that enter the battlefield after this spell resolves.
(wotc • 2017-07-14)
If more than one spell says that lands you control don’t untap during your next untap step, the effects will all wear off during that untap step. You’ll untap lands you control during your untap step after that one.
(wotc • 2017-07-14)