Transmute Blood

You manipulate the life essence within your blood, releasing a surge of primal energy that alters the properties of your blood so that it is more acidic, or so that when exposed to the air it spontaneously combusts or freezes (your choice when you initially case the spell).

When you take piercing or slashing damage you spray blood back in the direction of the attacker out to 5ft., with the following effects depending on the element chosen:

• Ignite: The target must succeed on a Dexterity saving throw or take 3d6 fire damage and be coated in searing blood, suffering disadvantage on attack rolls until the end of their next turn.
• Freeze: The target must succeed on a Constitution saving throw or take 3d6 cold damage and have their speed reduced by 10ft. until the start of their next turn.
• Caustic: The target must succeed on a Dexterity saving throw or take 3d6 acid damage and must roll a d10, on a 1 corroding their armor and reducing its AC by 1.

At Higher Levels. When you cast this spell using a spell slot of 4th level or higher, the damage increases by 1d6 for each slot level above 3rd.