First Battle of Hoover Dam

Destroy all attacking creatures you don't control.
You lose 1 life for each creature destroyed this
way. Put a +1/+1 counter on each creature you
control.
When Joshua Graham failed to seize Hoover Dam,
losing the majority of his forces to a pyrrhic NCR
ambush in the process, Caesar covered the now-
disgraced legate in burning pitch and cast him down
the Grand Canyon - a stark decree of his intolerance
for failure.