Dungeons & Dragons 2024 (D&D) Spell: Echoes of the Possible

You briefly split your consciousness, glimpsing two different outcomes of a possible future. On each of your turns while this spell lasts, you may choose one of the following effects:

• Advantage on one ability check, saving throw, or attack.
• Force a reroll of any d20 you can see. The new result must be taken.

Each of these options may be used once per turn, while concentrating. The effort is mentally taxing, however, and when the spell ends, make a DC 13 Constitution saving throw or take 1 level of Exhaustion.