Happy Heart is a badge that slowly and automatically restores HP to Mario during battle.

In Paper Mario, it can be traded from Merlow for 8 Star Pieces. It can also be found in Jade Jungle. It uses 3 BP.

In Paper Mario: The Thousand-Year Door, it can be found in Petal Meadows and traded from Dazzle for 4 Star Pieces. It can also be stolen or dropped from Koopa Troopas. It uses 2 BP.
Happy heart

In Paper Mario

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