Effect
During your Main Phase: You can detach 1 material from a "Battlin' Boxer" Xyz Monster you control, and if you do, Special Summon this card from your hand. You can only use this effect of "Battlin' Boxer Shadow" once per turn.
This is an Ignition Effect that activates in the hand. (This effect does not target.)
"Detach 1 Xyz Material from a 'Battlin' Boxer' Xyz Monster you control" is not a cost. It is treated as part of the effect resolution.
The resolution of "detach 1 Xyz Material from a 'Battlin' Boxer' Xyz Monster you control" and the resolution of "Special Summon this card from your hand" are treated as occurring simultaneously.
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