Name:Ipnu Rivulet
ManaCost:no cost
Types:Land Desert
A:AB$ Mana | Cost$ T | Produced$ C | SpellDescription$ Add {C} to your mana pool.
A:AB$ Mana | Cost$ T PayLife<1> | Produced$ U | SpellDescription$ Add {U} to your mana pool.
A:AB$ Mill | Cost$ 1 U T Sac<1/Desert> | NumCards$ 4 | ValidTgts$ Player | TgtPrompt$ Choose a player | SpellDescription$ Target player puts the top four cards of his or her library into his or her graveyard.
SVar:Picture:http://www.wizards.com/global/images/magic/general/ipnu_rivulet.jpg
Oracle:{T}: Add {C} to your mana pool.\n{T}, Pay 1 life: Add {U} to your mana pool.\n{1}{U}, {T}, Sacrifice a Desert: Target player puts the top four cards of his or her library into his or her graveyard.