Bridgerigor Invisia

Once cast you must believe that there is a bridge or stairway for you to walk on. If you believe you may step on air or water as if it is a flat, solid surface or stairs. When you begin movement in this way, and every 50 feet there after, you must make a Faith check to maintain concentration on the spell. To make a Faith check, roll 1d20 and add your wisdom modifier and subtract your intelligence modifier. You have proficiency if your wisdom is greater than your intelligence.

For example, if your wisdom modifier is +2, your intelligence modifier is +1, and your proficiency bonus is +2, then you would add +3 to your faith roll.