Spellbinder + Great Train Heist

Prerequisites

• Creatures you control can tap to produce at least .
• Spellbinder attached to a creature that can attack this turn and that cannot be blocked by an opponent.

Steps

1. 1Deal combat damage with the creature that has Spellbinder attached, triggering Spellbinder.
2. 2Holding priority, activate any number of creatures you control by tapping them, adding at least .
3. 3Resolve the Spellbinder trigger, casting a copy of Great Train Heist without paying its mana cost, and choosing to pay an additional to select its first mode, causing you to untap all creatures you control and to get an additional combat phase after this one.
4. 4Repeat each combat phase.

Effects

• Infinite combat damage
• Infinite combat phases
• Infinite magecraft triggers
• Infinite mana creatures you control can produce
• Infinite storm count
• Infinite untap of creatures you control