Dualcaster Mage, Reset, and Riptide Laboratory

Prerequisites

• Dualcaster Mage in hand
• Reset in hand
• Riptide Laboratory on the battlefield
• Other lands that can produce on the battlefield
• available

Steps

1. During an opponent turn, after their upkeep, cast Reset for
2. In response, cast Dualcaster Mage at instant speed for
3. Resolve Dualcaster Mage, and target Reset with his triggered ETB ability to copy Reset
4. Resolve the Reset copy untapping your lands including Riptide Laboratory
5. In response to the original Reset still on the stack, activate Riptide Laboratory's activated ability for and tap targeting Dualcaster Mage
6. Resolve Riptide Laboratory's activated ability returning Dualcaster Mage to your hand
7. Tap all lands other than Riptide Laboratory
8. Repeat

Results

• Infinite colored mana
• Infinite colorless mana
• Infinite ETB
• Infinite LTB
• Infinite storm count