How to unlock Gengar
Use the Kanto banner for its 4-star pool. It is not flagged as a rift legendary in this snapshot. Pool rolls select uniformly inside a rarity; pity and ten-pull guarantees can change the rarity chance. This is an unlock route, not a guaranteed targeted pull.
Starting attack and first evolution
Max Shadow Ball at level 5, take the Reflexes run card, then choose Phantom Force on the gold card.
Build from its legal move pool
Its ghost/poison typing lets it learn Normal moves plus moves matching either type. Compare the complete pool below before selecting four slots. Base HP, movement speed and damage multiplier are game-specific; permanent upgrades and run cards modify them. Only the active unbonded slot attacks.