Scholar of the Ages + Sacrifice + Entreat the Dead
Scholar of the Ages
Sacrifice
Entreat the Dead
Infinite black manaInfinite blinkingInfinite death triggersInfinite creature ETBInfinite creature LTBInfinite magecraft triggersInfinite creature sacrifice triggersInfinite storm countReturn all creature cards from your graveyard to the battlefieldReturn all instant and sorcery cards from your graveyard to your hand
How it works
Cast Sacrifice by paying and sacrificing Scholar of the Ages, adding seven .
Cast Entreat the Dead for X = 1 by paying 2, returning Scholar of the Ages from your graveyard to the battlefield.
Scholar of the Ages triggers, returning Sacrifice and Entreat the Dead from your graveyard to your hand.
Repeat any number of times.
Once you have infinite mana, you may choose any amount for X in step 2.