Call of Cthulhu

Draw X cards. Each creature you control
explores. Sacrifice each creature that had a +1/+1 counter put on it this way, then a number of cards
in your hand equal to the number of creatures sacrificed this way each have madness {0} until end
of turn.(If you discard this card, discard it into exile.
When you do, cast it for its madness cost or put it into
your graveyard.) Discard X cards.
We live on a placid island of ignorance in the midst of
black seas of infinity.