Makuhita and Hariyama
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Base Stats (Hariyama): 144 HP / 120 Atk /
75 Def / 40 /
90 SpD / 50 Spe
Intended Buff: Allows Hariyama to take advantage of its high HP with better Special Defense and slightly better Defense.
Wailmer and Wailord
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Base Stats (Wailord): 170 HP /
110 Atk /
80 Def / 90 SpA /
50 SpD / 60 Spe
Intended Buff: Help Wailord to become more useful Trick Room Offensive member with better Attack and a bit more tolerable Defense.
Tropius
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Base Stats: 99 HP /
113 Atk / 83 Def /
102 SpA /
92 SpD / 51 Spe
Intended Buff: Allows Tropius to use its Abilities better, especially Solar Power (if it keeps it).
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Gulpin and Swalot
Base Stats (Swalot): 100 HP /
113 Atk / 83 Def /
113 SpA / 83 SpD / 55 Spe
Intended Buff: Another potential useful member of a Trick Room team. Swalot lacked Recover or other viable recovery moves, so it stats focuses on its unorthodox (even for a Poison-type) move learnset while being able to abuse Curse, especially useful in such Trick Room team, and have its own Earthquake and Fire Punch to penetrate Steel-types. Glutonny and a potential new Food move will help it recover.