Time Roulette Go!
Time Wizard
ATK:
500
DEF:
400
Once per turn: You can toss a coin and call it. If you call it right, destroy all monsters your opponent controls. If you call it wrong, destroy as many monsters you control as possible, and if you do, take damage equal to half the total ATK those destroyed monsters had while face-up on the field.
Dark Sage
ATK:
2800
DEF:
3200
Cannot be Normal Summoned/Set. Must first be Special Summoned (from your hand or Deck) by Tributing 1 "Dark Magician" immediately after applying the effect of "Time Wizard" in which you called the coin toss right. When Special Summoned this way: Add 1 Spell Card from your Deck to your hand.