RE: Maggie (Magneboar/Pachirisu)
Your idea is good, I tried a similar deck last week (but with Zekrom and Shaymin, a sort of MagneRisu+Zekrom Donk).
Honestly I don't like your list very much. You play a lot of supporters not really needed, and so your trainer line is inconsistent.
Try with these changes:
- 1 Seeker (4 are too much, with Magnezone you'll often draw though they're only three)
- 3 Engineer (why do you play them? They're not essentials IMHO)
- 3 Sage (I really don't like this card)
- 1 Questions (IMHO 1 is enough, because with Magnezone you draw lots of energies)
- 3 Pokegear (1 is enough just to search a basic Seeker)
- 2 Circulator (rather Reversal)
(-13)
+ 4 Professor Oak's New Theory (they guarantee a fantastic refresh)
+ 1 Collector (very important to setup quicklier)
+ 3 Reversal (to kill theire Emboars, for example)
+ 3 Communication (very important to search Magneton and Magnezone)
+ 2 Junk Arm (always good with Communication and Candy)
(+13)
Pokemon:
- 1-0-1 Magnezone (Magnezone has 140PV, have 4 of them is useless...)
- 1 Pachirisu (4 are toooo many)
(-3)
+ 1 Cleffa (always great in decks with Magnezone)
+ 1 Zekrom (against fast decks it'd be a great hitter, but also while you setup Magnezone)
+ 1 Shaymin (to use Zekrom and when you have a Magnezone with no energies)
I like the energy line, maybe 4 Rescue Energies are too many but... it may work.
Hope I helped, bye!