A magenta printer hickey on unlimited prints coincidentally forms a heart shape in the artwork — one of the most beloved coincidence errors in WotC-era collecting. Both PSA and CGC graded copies are documented, with at least two CGC-slabbed examples confirmed. The most desirable copies show a thick, well-defined heart with circle; faded or partial impressions carry considerably less premium. Clefairy also appears separately in the Holo Shifts category.