Hex of Siphoning

You may only play Hex of Siphoning if you control at least 3 creatures.
Sacrifice all creatures you control.
At the start of the next turn, the players who's turn it is sacrifices all creatures they control.
You gain 3 life for each creature sacrificed by this card, then Hex of Siphoning deals 1 damage to all players for each creature sacrificed by this card.
"MORE POWER. MORE!!"