Miotken, Arbiter of the Deep

This spell cannot be countered
Menace, reach, islandwalk
When Miotken enters the battlefield, choose one:
•all lands become islands
•exile six non-blue permanents
•tap all creatures an opponent controls,
they don't untap during their next untap step
{bull}all non-blue creatures get a -4/-5 counter
"It gives terror to the name 'Leviathan'"
-Calcinor Morinerev