Cthulu

Menace, Indesctructible, Hexproof, Trample
Other Horrors and Gods you control have Menace
When Cthulu, the Dreamer enters the battlefield, exile all graveyards. For each card type among nonland cards exiled this way, you may cast one of those cards without paying its mana cost.
At the beginning of combat on your turn, tap all creatures target player controls. Those creatures do not untap on their controller's next untap step.
If Cthulu, the Dreamer would be placed into a graveyard from anywhere, ex