Dyadrine, Synthesis Amalgam, Crystalline Crawler, Resourceful Defense, Myth Unbound, and Phyrexian Altar

Prerequisites

• Dyadrine, Synthesis Amalgam in the command zone
• Crystalline Crawler on the battlefield
• Resourceful Defense on the battlefield
• Myth Unbound on the battlefield
• Phyrexian Altar on the battlefield
• plus enough mana to pay for commander tax if applicable available

Steps

1. Cast Dyadrine from the command zone by paying plus commander tax, if applicable, reduced by for each time you've cast Dyadrine this game from the command zone due to Myth Unbound
2. Dyadrine will enter the battlefield with a +1/+1 counter on it for each mana spent to cast it
3. Activate Phyrexian Altar by sacrificing Dyadrine, adding
4. Choose to return Dyadrine from the battlefield to the command zone
5. When Dyadrine dies, Resourceful Defense triggers, putting a number of +1/+1 counters on Crystalline Crawler equal to the number Dyadrine had as it died
6. Activate Crystalline Crawler by removing all +1/+1 counters placed on it in step 4, adding and then for each remaining counter
7. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite storm count
• Infinite commander casts