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I have a multiclass PC with 3 levels in warlock/hexblade and 1 level in sorcerer/divine soul.
This means I have 2 level 1 sorcerer slots and 2 level 2 warlock slots. I can cast cure wounds because I am a good aligned divine soul sorcerer.
If I cast cure wounds using a level 2 warlock slot, do I heal for 1d8+CHA or 2d8+CHA?