Rate my pokemon heartgold team?

It's a surprisingly good team for a non-competitive player. On some Pok�mon you might want to drop moves that don't give you good coverage. Like on Starmie, you should obviously replace Bubblebeam with Surf, and then replace Hydro Pump with Ice Beam. You could also keep Hydro Pump if you need the extra power and replace Bubblebeam with Ice Beam. Slash is pointless on Blaziken, Steel Wing is dead weight on Flygon. Cacturne doesn't have much bulk, so if you really want a Leech Seed/Giga Drain user, you could consider something with more bulk like Cradily or Venusaur.