How should a player remedy Improper Drawing if too few cards were drawn?

The appropriate remedy for Improper Drawing, particularly in the case of drawing too few cards, is to draw up to the correct number of cards. This action restores the game state to what it should have been according to the rules of Magic: The Gathering. By adjusting the hand size to the correct number, the player can continue the game without significant disruption or additional penalties.

The chosen option is consistent with the philosophy of maintaining game integrity and ensuring that both players have a fair experience during the match. It allows for the correction of the mistake without imposing further complications, such as those that would occur with starting over or altering other aspects of the game state.

The other choices present actions that do not align with the proper handling of the infraction. Restarting the game would not be practical as it disregards the current state and progress made in the match. Shuffling the drawn cards back into the deck is unnecessary and could lead to further confusion or disruption. Advancing to the next phase does not address the specific issue of having drawn too few cards and would be ignoring the error altogether, potentially resulting in additional penalties or complications later in the game.