Wound Reflection

Devoid(This card has no color)
At the beginning of each end step, each opponent loses life equal to the life they lost this turn. (Damage causes loss of life.)
The Eldrazi are an ancient race native to the Blind Eternities that have neither physical form nor color alignment. Their nature is ceaseless hunger, so they
travel between planes devouring the mana and life
energy until the plane's destruction.