You tap into the aetherial matter that connects the world, and siphon off a measure of good luck from a creature within range that you can see. For the next minute, if the target rolls a d20 for any reason you may choose for the target to re-roll the die and use the new roll.

Before the duration ends, you hold onto this absorbed luck and can give yourself advantage on any d20 roll you make, you can choose to to this after making the first roll. 

At Higher Levels. When you cast this spell at 2nd level or higher, you can absorb and hold on to the luck of one additional creature for every level above 1st.