Question

This is In-game.
Alakazam
Nature relaxed
Attacks
Pysbeam
Calm mind
Psychic
??????
I have access to the first two tutor.
This is Platinum.

Answer 1

Gengar Your set Is cool but I like this one better

Alakazam@Leftovers
-Nature Relaxed(-Speed +Defense)
-Physic (STAB)
-Calm Mind (BOOST)
-Shadow Ball(Coverage)
-Energy Ball(Coverage)/Fire-Punch-(Bug Weakness)
I love Weird things ¯(°_o)/¯

Answer 2

I think the 4th move you should keep is shadow ball.It is just for a coverage incase if you fight against a ghost type trainer,Like fantina for instance

Answer 3

You should replace Psybeam with Focus Blast for coverage against Dark types and the 4th move must be Shadow Ball because it is powerfull and you have coverage against Ghost types as well.If you have Ev train your Alakazan in Sp.Attack I think Calm mind in unuseless so replace it with Energy Ball . For more interesting movesets click here.