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My Brawl opponent had a Nadu deck with landfall shenanigans. They played a Mythweaver Poq, and then next turn an Ashaya, Soul of the Wild. I was losing, but made a desperation attack. I would guess they were trying to have another blocker because they cast Essence Flux on their Mythweaver Poq. Kind of to my surprise, Poq being a land sees itself enter, and triggers, conjuring a duplicate Poq, causing triggers ad infinitum. I think my opponent was clicking through the legend rule prompts for a while, but then either gave up or timed out. You can see they have about 30 Poqs in their graveyard when I took the screenshot. Eventually the game ended in a draw.