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Golden Aura • Sanctum • Action • Common • Play: Choose a creature. Fully heal the chosen creature. For the remainder of the turn, the chosen creature is considered to be in house Sanctum and cannot be dealt damage. • Artist: Natalie Russo • Card Number: AoA:217
Effects may still attempt to deal damage to a creature that "cannot be dealt damage", but the targeted creature's ability will prevent that damage according to the first step of the Damage section of the Timing Chart.
Source: Timing Chart