Chaos of the Old Gods

For each creature that died last turn, offer them as sacrifice for Yogg Saron, and roll 2d4. For each roll, the combination of the dice will determine a response from the Old Gods :

IF the two dice are even, Cast a 5th level spell from the class of the first and last character based on initiative. Target randomly another creature than the caster.

IF the two dice are odds, Invoke a "Detached Tentacle" that will attack wohmever in his way. Target randomly another creature than the caster.

IF the two dice don't give the same result, transform a weapon into a random magic item with a random cursed casted on it.