Siege on Airolazerath

If your devotion to red is 7 or greater, enchant
two target lands. If not, destroy a land you control.
Enchant target land, it gets "{t} for {r}{c}" and
"If this land was used to cast a creature spell, sacrifice a creature or all creatures you control
get -1/-1."

"The siege on Airolazerath as a massacre as Mograk
the Indomitable Cindermaw fortified the bastion
with his ashwraiths."