Ill take a shot at it:
Hour of Death 6
Permanent : 6 counters
at the end of each turn, Rewind 2 random creatures from each players field.
Rewind Target Creature.
Creatures that Die add
to your quanta pool and are Rewound instead.
Upkeep
Hows that for synergy, though it is like 3 cards in one, I think it gives the idea of an "Hour of Death" or a Dance Macabre very well.