Tayam, Luminous Enigma, Promise of Bunrei, and Ashnod's Altar

Prerequisites

• Tayam, Luminous Enigma on the battlefield
• Promise of Bunrei on the battlefield
• Ashnod's Altar on the battlefield
• You control at least one additional creature
• available

Steps

1. Activate Ashnod's Altar by sacrificing any other creature, adding
2. Promise of Bunrei triggers, causing you to sacrifice it and create four 1/1 Spirit creature tokens that enter the battlefield with vigilance counters on them
3. Activate Tayam by paying and removing three vigilance counters from the Spirits, causing yourself to mill three cards and return Promise of Bunrei from your graveyard to the battlefield
4. Activate Ashnod's Altar twice by sacrificing two Spirits, adding
5. Repeat from step 2

Results

• Infinite colorless mana
• Infinite creature tokens
• Infinite death triggers
• Infinite ETB
• Infinite LTB
• Infinite sacrifice triggers
• Infinite self-mill
• Put all permanents with mana value three or less from your library and graveyard onto the battlefield