Quicksilver Elemental, Touch of Vitae, and Heronblade Elite

Prerequisites

• Quicksilver Elemental on the battlefield
• Touch of Vitae in hand
• Heronblade Elite on the battlefield
• available

Steps

1. Cast Touch of Vitae by paying , targeting Heronblade Elite
2. Activate Quicksilver Elemental by paying , causing it to gain Heronblade Elite's activated abilities until end of turn
3. Activate Quicksilver Elemental using Heronblade Elite's ability by tapping it, adding at least Activate Quicksilver Elemental using Heronblade Elite's ability granted to it by Touch of Vitae by paying , untapping Quicksilver Elemental
4. Repeat from step 2

Results

• Infinite colored mana