>In the Pokémon Mystery Dungeon series, the standard A-button tackle will do one HP damage. In Red Rescue Team and Blue Rescue Team, foe Shedinja always has a maximum of 5 HP, whereas in Explorers of Time, Explorers of Darkness and Explorers of Sky, foe Shedinja always has a maximum of 10 HP. However, as a team member, Shedinja's HP is not capped.
Soo... I suppose the answer would be as many life seeds as possible until Shedinja is fat and bloated c:. Or whatever the HP Cap in the games for all Pokemon is...
I could be wrong I have no idea c: And I really don't know how to find an exact number of Life Seeds.