Time Wizard

*This is a Dark Sage, Summoned Skull,
Thousand Dragon, 30.000-Year White Turtle
XYZ fusion material.
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•Time Magic {3}{w}{w}{w}: Flip a coin and calls
heads or tails. If you win the flip, destroy all
creatures your opponents controls. Otherwise if
you lose the flip, destroy all face up creatures
you control, you take damage equal to half the
total combined power those creatures destroyed.
Activate this abili