The Aura you sacrifice doesn't have to be attached to Gatherer of Graces.
01-02-2006
wotc
If Gatherer of Graces already has damage on it equal to its toughness minus 1, then sacrificing an Aura attached to it results in Gatherer of Graces being put into its owner's graveyard before the ability that would regenerate it resolves.
Random a card of Magic: The Gathering (MTG), but you can also roll the D20 dice, random a Planeswalker, have fun with the random rules and more.