Bone Miser, Blood Speaker, Skirge Familiar, and Conspiracy

Prerequisites

• Bone Miser on the battlefield
• Blood Speaker in hand
• Skirge Familiar on the battlefield
• Conspiracy on the battlefield
• "Demon" chosen with Conspiracy

Steps

1. Activate Skirge Familiar by discarding Blood Speaker, adding
2. Bone Miser's first ability triggers, creating a 2/2 Zombie creature token that enters the battlefield as a Demon due to Conspiracy
3. Blood Speaker's second ability triggers, returning itself to your hand from your graveyard
4. Repeat

Results

• Infinite black mana
• Infinite creature tokens
• Infinite ETB
• Infinite self-discard triggers