Lorthos, the Tidemaker

Whenever Lorthos, the Tidemaker attacks, you
may pay {8}. If you do, tap up to eight target
permanents. Those permanents don't untap
during their controllers' next untap step.
"It lives in complex rock formations on the ocean floor
and traps prey using its 80 tentacles. Its red orbs glow
when it grows excited or agitated."