Vivi Ornitier, and Quicksilver Elemental

Prerequisites

• Vivi Ornitier on the battlefield
• Quicksilver Elemental on the battlefield
• available

Steps

1. Activate Quicksilver Elemental by paying , causing it to gain Vivi's activated abilities until end of turn
2. Activate Quicksilver Elemental using Vivi's ability by paying , adding
3. Repeat

Results

• Infinite red mana
• Infinite blue mana
• Infinite colored mana that can only be spent to activate abilities