Bone Miser, Blood Speaker, Mind Over Matter, and Xenograft

Prerequisites

• Bone Miser on the battlefield
• Blood Speaker in hand
• Mind Over Matter on the battlefield
• Xenograft on the battlefield
• "Demon" chosen with Xenograft

Steps

1. Activate Mind over Matter by discarding Blood Speaker
2. Bone Miser's first ability triggers, creating a 2/2 Zombie creature token that enters the battlefield as a Demon due to Xenograft
3. Blood Speaker's second ability triggers, returning itself to your hand from your graveyard
4. Resolve the Mind over Matter ability, untapping target artifact, land or creature
5. Repeat

Results

• Infinite creature tokens
• Infinite ETB
• Infinite mana permanents you control can produce
• Infinite self-discard triggers
• Infinite untap of permanents you control