Wizard: School of Entropy

Wizards who specialize in chaos magic crave an understanding of probability and life's unpredictable outcomes to the point of obsession. What starts as an attempt to analyze the patterns of chaos quickly becomes a trip down the rabbit hole to madness. Except as noted below, entropists function as wizards and use the wizard spell list.

Chaos Magic Savant

Beginning when you take up this specialty at 2nd level, the gold and time you must spend to copy a chaos spell into your spellbook is halved

Long Odds

Also starting at 2nd level, you can manipulate the reality changing forces of chaos to alter the odds in a situation. You can use a bonus action to give yourself, or a reaction to give a creature you can see, advantage on one attack roll, saving throw, or ability check made during this turn. Using this feature causes a chaos magic surge. You must finish a long rest before you can use this feature again.

Twisted Arcana

Starting at 6th level, when you cast a spell that deals damage, you can infuse the effect with greater power by channeling chaos through yourself. You make this choice after determining that the spell has been successfully cast (by making a spell attack roll) but before rolling damage. If you decide to use this feature, roll a d6 + 1; this is the maximum number of your spell’s damage dice you can reroll. You can reroll any number of damage dice up to that maximum, and you must use the rerolled results. In addition, the type of damage your spell deals is replaced randomly. Use the Random Damage Type table to determine the spell’s new damage type.

Damage d10

1. Acid
2. Cold
3. Fire
4. Force
5. Lightning
6. Necrotic
7. Poison
8. Psychic
9. Radiant
10. Thunder

Shifting Resistance

Beginning at 10th level, when you cast a chaos spell, you gain resistance to a random damage type for a number of rounds equal to 1 + your Intelligence modifier (minimum of 1). You can try to narrow the spell’s focus to a damage type you prefer, but doing so has an element of risk; you can roll twice on the Random Damage Type table and choose the result you prefer, but you must also roll to see if a chaos magic surge occurs. You must finish a long rest before you can use this feature again.

Master of Chaos

Starting at 14th level, anytime you cause a chaos magic surge, you regain one use of Long Odds, Twisted Arcana, or Shifting Resistance without needing to finish a long rest. In addition, every time you cast a chaos spell, you gain temporary hit points equal to your Intelligence modifier + the spell’s level.