Sigil of the New Dawn, Crystalline Crawler, Doubling Season, and Altar of Dementia

Prerequisites

• Sigil of the New Dawn on the battlefield
• Crystalline Crawler in hand
• Doubling Season on the battlefield
• Altar of Dementia on the battlefield
• in at least three different colors available

Steps

1. Cast Crystalline Crawler giving it six +1/+1 counters because of Doubling Season
2. Remove all six counters getting
3. Sacrifice Crawler to Altar milling target player 1
4. Pay Sigil's cost of returning Crawler to hand
5. Recast Crystalline Crawler for all but one of the remaining floating mana giving it eight +1/+1 counters
6. Remove all eight counters netting of assorted colors containing at least
7. Repeat steps 4-7

Results

• Infinite colored mana
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite mill
• Infinite sacrifice triggers
• Infinite storm count