Maractus @ Leftovers / Heat Rock
Ability: Chlorophyll
EVs: 4 HP / 252 SpA / 252 Spe
Timid Nature
- Sunny Day
- Solar Beam
- Synthesis
- Hidden Power [Rock]
Explanation: Sunny Day to boost Maractus's unimpressive speed so it can strike first most of the time. Solar Beam is STAB and doesn't require the charging with Sunny Day in action. Synthesis restores 2/3 HP during harsh sunlight (Sunny Day) and Hidden Power [Rock] deals with Maractus's two major weakness: Flying- and Fire-types. Heat Rock is to make Sunny Day's duration last longer, or you can choose Leftovers to regain a bit of health at the end of each turn.
Maractus @ Leftovers
Ability: Water Absorb
EVs: 252 HP / 128 Def / 128 SpD
Bold Nature
- Toxic
- Spiky Shield
- Leech Seed
- Synthesis
Explanation: Maractus' Nature can be anything that boosts Def/SpD and lowers Atk/SpA. Make Maractus as tanky as possible, and use the Toxic and Leech Seed combo to slowly drain the opponent's health. Spiky Shield to use every other turn to inflict damage as well as protect Maractus and Synthesis to recover health when it goes down. Water Absorb grants it an immunity and if the opponent does not know and uses a Water-type move, good for you, because it regains health. And Leftovers is there to regain health as well.
Maractus @ Leftovers
Ability: Water Absorb
EVs: 180 HP / 252 Atk / 76 SpD
Adamant Nature
- Cotton Guard
- Petal Blizzard
- Drain Punch
- Sucker Punch
Explanation: The EVs are roughly calculated to boost Maractus's Special Defense as Cotton Guard increases its Defense. Petal Blizzard is a powerful STAB and Drain Punch covers Ice-types (amongst others) as well as regaining health. Sucker Punch is priority and provides further coverage, notably against Ghost and Psychic. Water Absorb also provides immunity and regains health if hit by a Water-type move.
Maractus @ Leftovers
Ability: Storm Drain
EVs: 4 HP / 252 SpA / 252 Spe
Timid Nature
- Giga Drain
- Toxic
- Rest
- Snore
Explanation: Storm Drain grants it immunity to Water-type moves, and, should it get hit by a Water type move, it will get its Special Attack increased, which is always good. Giga Drain is STAB and recovers health, Toxic drains its opponent's HP as it uses a combination of Rest and Snore to sustain itself. Leftovers is there to regain health slowly but surely as well.