Quilled Greatwurm, Crystalline Crawler, and Najeela, the Blade-Blossom

Prerequisites

• Quilled Greatwurm on the battlefield
• Crystalline Crawler on the battlefield
• Najeela, the Blade-Blossom on the battlefield
• Crystalline Crawler has power 5 or greater, does not have summoning sickness, and cannot be blocked and killed by an opponent

Steps

1. Declare Crystalline Crawler as an attacker, along with any number of Warrior(s) if desired
2. If you declared one or more Warrior(s) as attackers, Najeela triggers, creating that many 1/1 Warrior creature tokens that are tapped and attacking
3. Deal combat damage using Crystalline Crawler
4. Quilled Greatwurm triggers, putting that many +1/+1 counters on Crystalline Crawler
5. Activate Crystalline Crawler's first ability five times by removing five +1/+1 counters from it, adding
6. Activate Najeela by paying , untapping all attacking creatures, giving them trample, lifelink and haste, and gaining an additional combat phase after this one
7. Repeat each combat phase

Results

• Infinite ETB
• Infinite colored mana
• Infinite combat phases
• Infinite creature tokens with haste
• Infinite combat damage
• Infinite +1/+1 counters on Crystalline Crawler