When multiple of my other Digimon with [Knightmon] in their text would leave the battle area simultaneously due to my opponent's effects, if I activate this Digimon's [All Turns] effect and place it as 1 of those Digimon's bottom digivolution card, are all of my other Digimon with [Knightmon] in their text prevented from leaving the battle area?
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Yes, all of your other Digimon with [Knightmon] in their text will be prevented from leaving the battle area.
Source: P-154 Maildramon
