Mikaeus, the Unhallowed, Crystalline Crawler, and Woe Strider

Prerequisites

• Mikaeus, the Unhallowed on the battlefield
• Crystalline Crawler on the battlefield
• Woe Strider on the battlefield

Steps

1. If Crystalline Crawler has a +1/+1 counter on it, activate its first ability by removing a +1/+1 counter from it, adding one mana of any color
2. Repeat step 1 until Crystalline Crawler has no +1/+1 counters on it
3. Activate Woe Strider by sacrificing Crystalline Crawler
4. Crystalline Crawler dies, triggering its undying ability, returning it to the battlefield with a +1/+1 counter on it
5. Resolve the Woe Strider ability, causing you to scry 1
6. Repeat

Results

• Infinite colored mana
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers
• Infinite scry 1