Grandmother Goby, Phyrexian Altar, Bond of Insight, and Prismari, the Inspiration

Prerequisites

• Grandmother Goby on the battlefield
• Phyrexian Altar on the battlefield
• Bond of Insight in hand
• Prismari, the Inspiration on the battlefield
• available

Steps

1. Cast Bond of Insight by paying
2. Grandmother Goby and Prismari trigger
3. Resolve the Grandmother Goby trigger, countering Bond of Inisght and creating four 1/1 Merfolk creature tokens
4. Resolve the Prismari trigger, copying Bond of Insight a number of times
5. Resolve the first copy of Bond of Insight, causing each player to mill four cards and then returning the original Bond of Insight and up to one other instant or sorcery from your graveyard to your hand
6. Repeat step 5 for other Bond of Insight copies as appropriate
7. Activate Phyrexian Altar four times by sacrificing the four Merfolk tokens, adding
8. Repeat

Results

• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers
• Infinite magecraft triggers
• Infinite mill
• Infinite self-mill
• Infinite storm count
• Put all instant and sorcery cards from your graveyard and library into your hand