Question

Which is a good move?

Comments

Both of them. For Gengar Shadow Ball.

Answer 1

Shadow ball should likely come Standard for gengar, seeing as he gains STAB with it. Dark Pulse covers the exact same types as Shadow Ball, so it's to your advantage to go with shadow ball.

Comments

thnx DT ur awesome

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Nice answer! Only forgot the flinching chance on DP.

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Shadow Ball is better for Gengar because the moves of the same type with user are more powerful.