Iceborn

You learn to call on frozenness to serve your commands. You gain the following benefits:

• Increase your wisdom or Charisma by 1, to a maximum of 20.
• When you roll cold damage for a spell you cast or weapon attack, you can reroll any roll of 1 on the cold damage dice, but you must use the new roll, even if it is another 1.
• You have resistance to cold and poison damage.
• You have advantage on saving throws against being poisoned.