Matcha Gotcha or Strength Sap and other healing to deflect physical attackers — a physical wall Sinistcha. After weakening physical attackers with Strength Sap's Attack drop, it safely Calm Mind to fortify itself — that's the composition.

Alternative Move Options

Hex and Scald also recommended

• Scald

a reliable Ghost-type move with solid accuracy and powerShadow Ball — besides this, Matcha Gotcha which capitalizes on burn, Hex, and as a way to hit Fire types, Scald and others are options. Customize based on what role Sinistcha is meant to fill.

Alternative Held Item Options

• たべのこし

• オボンのみ

For the held item, Sitrus Berry is also an option. With a Sitrus Berry, by consuming it, Poltergeist becomes very strong against Ghost-type Pokémon that rely on it. Use it interchangeably with Leftovers, which can fight tenaciously with passive recovery.

Physical Wall Calm Mind Build Role

Switched in against favorable physical opponents, Strength Sap to absorb the opponent's attacks is its main role. With a move that heals while attacking, Matcha Gotcha to pressure the opponent, and when an opening appears, Calm Mind to boost its stats, completely dominates a board skewed toward physical attackers — its role.

Favorable Matchups

A physical attacker whose weaknesses aren't exploited

Sinistcha, as long as its weaknesses aren't exploited, can tank almost any physical attacker.A healing move that is highly effective when facing physical attackers, Strength Sap as its core, deflect the opponent's attacks.

Threats

High-power Special Attackers

Sinistcha has plenty of counterplay against physical attackers, but taking a hit from a high-power special attacker can be fatal. Set up Calm Mind in advance, or if you face a special attacker, switch to a benched Pokémon.

With HP/Sp.Def EVs, it halves weak-point Ghost moves with Kasib Berry to secure more turns of action — a support Sinistcha.Hospitality recovers ally HP or Rage Powder to protect allies from the opponent's attacks while setting up the battle.

EV Allocation Intent

By allocating EVs to HP and Sp.Def, it becomes easier to survive even super-effective moves. Additionally, Kasib Berry allows it to survive Mega Gengar's Shadow Ball as well as Basculegion's 150-power Last Respects as well.

Alternative Move Options

Shadow Ball and recovery moves are also recommended

Shadow Ball and recovery moves are also recommended. Shadow Ball is a STAB move, and Matcha Gotcha can also deal damage to Pokémon that halve it. Additionally, for recovery moves there is Life Dew or Strength Sap, which suits the bulky Sinistcha.

Hospitality Role

Heals ally via ability and self-deploys Trick Room to flip Speedas field-builder. Drawing opponent attacks, attack+heal signature move keeps it on field.

Threats

Fire-type Pokémon

It is weak to Fire-type Pokémon. Fire-type moves hit a weakness, and on top of that Matcha Gotcha is halved and you can't aim for a burn either. When facing a threatening Pokémon, Protect or switching to avoid taking the move, defeat it with an ally's move.