Zarzulis's Arcane Augmentation

A signature spell devised by the Archmage of Meta-Manipulation, this spell was crafted to warp and manipulate arcane energies cast by other casters. This spell was designed to be utilized in a variety of situations and offers flexibility in regards to how it manipulates the spell it is targeting.

You augment a spell cast within range, empowering an element of the spell. if the spell is 3rd level or lower you can empower the spell with one of the following effects.

• If the spell has a duration longer than 1 minute or longer you double the duration of the spell to a maximum duration of 24 hours. If the affected spell requires concentration, the caster has advantage on any saving throws they make to maintain that concentration.
• If the spell forces a creature to make a saving throw, each creature affected by the spell rolls 1d4 and subtracts it from the saving throw.
• If the spell forces other creature to make a saving throw, you can choose up to three creatures who gain advantage on the saving throw. If a chosen creature succeeds its saving throw against the spell it takes no damage if it would normally take half damage on a successful save.
• When damage is rolled for the spell, you can reroll a number of damage dice up to your spellcasting modifier (minimum one) and the spell must use the new rolls.

A cast spell can only be augmented by this spell once.

Using a Higher-Level Spell Slot. You can augment a spell if the spell’s level is equal to or less than the level of the spell slot you use.