Liliana, Untouched by Death, Universal Automaton, and Ashnod's Altar

Prerequisites

• Liliana, Untouched by Death on the battlefield
• Universal Automaton on the battlefield
• Ashnod's Altar on the battlefield
• Liliana has at least three loyalty counters

Steps

1. Activate Liliana's third loyalty ability by removing three loyalty counters from it, allowing you to cast Zombie spells from your graveyard this turn
2. Activate Ashnod's Altar by sacrificing Universal Automaton, adding
3. Cast Universal Automaton from your graveyard by paying
4. Repeat from step 2

Results

• Infinite colorless mana
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers
• Infinite storm count