Saw in Half, Sacrifice, and Mnemonic Wall

Prerequisites

• Saw in Half in hand
• Sacrifice in hand or in the graveyard
• Mnemonic Wall on the battlefield
• available

Steps

1. Cast Saw in Half by paying , destroying Mnemonic Wall and creating two token copies of it with base power equal to half the destroyed creature's power and base toughness equal to half the destroyed creature's toughness, rounding up each time
2. The two Mnemonic Wall tokens enter the battlefield, returning Sacrifice, if applicable, and Saw in Half from your graveyard to your hand
3. Cast Sacrifice by paying and sacrificing a Mnemonic Wall token, adding
4. Repeat
5. Once you have infinite mana, you may instead return any other instant or sorcery that can be cast using only black mana in place of Sacrifice using the Mnemonic Wall tokens to get infinite casts of those instants and/or sorceries

Results

• Infinite black mana
• Infinite casts of instants and sorceries in your graveyard that can be cast using only black mana
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite magecraft triggers
• Infinite sacrifice triggers
• Infinite storm count