Pokemon HeartGold

[Namine]

It's pointless to get beyond 1 of the same type attack, unless it's things like overheat/fire blast, or water spout/surf. If you want 4 sp.attacks, Shadow Ball or Signal Beam should be last slot (or ideally, the other one replaces energy ball) so you can hit other psychic/ghost, or other psychic/dark. 2 attacks of the same type, unless it's special circumstances, is wasting elemental coverage or other forms of utility.

Energy ball is a new type of attack, but got weak coverage compare to what Gardevoir can do. Whatever is ground, is generally going to be weak to psychic due to low spdef, and they really got little reason to switch in to Gardevoir unless it's something that can Sucker Punch you (in which case, you'll have to run or face an OHKO.)