Hour of Revelation

This spell cost {3} less to cast if there are ten or
more nonlands permanents on the battlefield.
Destroy all nonlands permanents.
The tolling of the Doomsday Clock reverberates
through the ether, an ominous symphony echoing the
world's heartbeat. Its mechanized chime measures
time's fragility, a haunting reminder that the balance between salvation and oblivion teeters upon the edge of
gears and destiny.