Culling the Weak + Kairi, the Swirling Sky + Saw in Half + Spark Double

Mana needed: {2}{B}{B}

UB identity

Commander legal

The 4 combo pieces

• Culling the Weak
• Kairi, the Swirling Sky
• Saw in Half
• Spark Double

How to execute it

1. Cast Saw in Half by paying {2}{B}, destroying Spark Double and creating two token copies of it that are nonlegendary copies of Kairi.
2. When Spark Double dies, it triggers.
3. Holding priority, cast Culling the Weak by paying {B} and sacrificing one of the Spark Double tokens.
4. When the token dies, it triggers. Choose either mode.
5. Resolve Culling the Weak, adding {B}{B}{B}{B}.
6. Resolve the Spark Double trigger from step 5, causing you to mill six cards and return Saw in Half and Culling the Weak from your graveyard to your hand.
7. Repeat

What the combo produces

• Infinite creature LTB
• Infinite death triggers
• Infinite ETB
• Infinite magecraft triggers
• Infinite sacrifice triggers
• Infinite self-mill
• Infinite storm count
• Put all instant and sorcery cards from your graveyard and library into your hand
• Return all instant and sorcery cards from your graveyard to your hand