You can't have any of the tokens attack a battle
Once an end step begins, it's too late to cause a player to lose life in order to cause this ability to trigger
Without a control player, the ability to prevent damage to oneself might be the way to go
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These MTG Borderless Poster Lord of the Rings cards could stay high because the supply is so low, but its tough to know for certain if the current demand for these cards is artificially inflated or not