The World Will Tremble

Sacrifice X amount of lands and sacrifice X amount of creatures
You gain X amount of life, draw X amount of cards, and your card size becomes X for X amount of turns
Target opponent sacrifices X amount of permanents and puts X amount of cards from the top of his/her library into his/her graveyard
Each player effected by this card may either play a card from their graveyard or from their hand without paying it's mana cost