The Pokémon recovers HP whenever Mud Sport or Water Sport are used in battle.

onMoveUse: (game,move,user,targets) => {

if ((move.uid === "07sfxmv3"))
target.abilityPopup();
if (target.hp < target.hpTotal()) {
game.healMon(target, "1/2");
game.textbox.say(target.getName() + " is frolicking in the mud and restored health!");
} else{
game.textbox.say(target.getName() + " is frolicking in the mud!");
}

if ((move.uid === "07nyin0b"))
target.abilityPopup();
if (target.hp < target.hpTotal()) {
game.healMon(target, "1/2");
game.textbox.say(target.getName() + " is frolicking in the water and restored health!");
} else{
game.textbox.say(target.getName() + " is frolicking in the water!");
}

}
}


Made by Marshlands. Free to use! The pokemon recovers half of its max HP whenever mud sport or water sport are used by anyone on the battlefield.

previously "The Pokémon gradually regains HP if the battlefield is under the effects of Mud Sport or Water Sport." with 1/8 HP regained at the end of each turn.