Foretell

You receive a vision of the near future. Roll a d20 and store that number. When you or your allies are going to roll that dice type, you can instead replace it with your dice roll, you then lose your Foretell dice. You can only have one Foretell dice at a time, casting Foretell again overwrites the previous dice. Foretel dice last until the end of your next turn.

After rolling, you may spend 1 mana to reroll the dice once. After doing this, you can't do so again for this use of the ability.