Nyarlathotep of 1,000 Forms

When Nyarlathotep of 1,000 Forms enters the battlefield, its power and toughness is equal to the number of cards in your hand plus the number of cards in each opponents' hands.
If Nyarlathotep would be the target of a spell or ability, you may instead pay X, where X is that card's converted mana cost. Then choose a new target for the spell or ability. Nyarlathotep becomes a copy of that card with this ability.