The Kraken, the Tidemaker

Whenever The Kraken, the Tidemaker attacks, you
may pay {8}. If you do, tap up to eight target
permanents. Those permanents don't untap during
their controller' next untap steps.

The kraken is a legendary sea monster of enormous
size, per its etymology something akin to a cephalopod,
said to appear in the sea between Norway and Iceland.
It is believed that the legend of the Kraken may have
originated from sightings of giant squid
[Lorthos, the Tidemaker]