Metalworker, Freed from the Real, and Signpost Scarecrow

Prerequisites

• Metalworker on the battlefield
• Freed from the Real on the battlefield
• Signpost Scarecrow on the battlefield
• undefined

Steps

1. Activate Metalworker by tapping it, causing you to reveal at least two artifact cards from your hand and add at least
2. Activate Signpost Scarecrow by paying , adding
3. Activate Freed from the Real's second ability by paying , untapping Metalworker
4. Repeat

Results

• Infinite colored mana
• Infinite colorless mana