Prerequisites
- Black Market on the battlefield
- Lithoform Engine on the battlefield
- Clever Conjurer on the battlefield
- Umbral Mantle on the battlefield
- Black Market has at least six charge counters on it
- Umbral Mantle attached to Clever Conjurer
- Clever Conjurer does not have summoning sickness
- available
Steps
- At the beginning of your precombat main phase, Black Market's second ability triggers
- Holding priority, activate Lithoform Engine's first ability by paying and tapping it, copying Black Market's trigger
- Resolve the copy of Black Market's trigger, adding at least six
- Activate Clever Conjurer by tapping it, untapping Lithoform Engine
- Activate Clever Conjurer by paying and untapping it, giving it +2/+2 until end of turn
- Repeat from step 2
Results
- Infinite black mana
- Infinitely large Clever Conjurer until end of turn
- Infinite mana artifacts you control can produce
- Infinite mana creatures you control can produce
- Infinite untap of artifacts you control
- Infinite untap of creatures you control
Required Cards 4
Lithoform Engine
Legendary Artifact
Clever Conjurer
Creature — Gnome Wizard
Umbral Mantle
Artifact — Equipment