Niv's Decree

Prismatic 5
If you spend __ mana to cast this spell, then -
*white - each player gains twice that much life.
*blue - each player draws that many cards.
*black - each player sacrifices that many permanents.
*red - this spell deals that much damage to each creature and each planeswalker.
*green - each player tutors for that many basic land cards to the battlefield tapped and shuffles.