This Magneton isn't as good as it
looks. First of all, its 70HP is below average, even for a Metal
Pokemon. Secondly, its attack does too little damage, and its
Bench damage isn't reliable. Thirdly, its power is really
overrated, and situational at best.
Unlimited: Its power is actually
more useful in this format than in any other format, in my
opinion. If your opponent plays Darkness Energy (to power up his
or her Sneasel or Murkrow, both of which are common in
Unlimited), you could switch one of its Darkness Energies with
an Energy attached to a Baby, for example, effectively KOing the
baby in a few turns. However, that's as much as you can hope
for. Magnetic Flowing a Metal Energy off a Steelix or a Scizor
won't help you much (it could actually help your opponent =\).
70HP on this Magneton ensures that it's not gonna stay for long,
even if you use Metal Energies to power up its attack. And its
attack is, plainly, bad.
Modified: Its power is actually
worse here, since Darkness Energy is played less in this format.
It's practically useless against decks that play only one type
of Energy (like Entei/Magcargo, which happens to be Magneton's
archenemy =\). So this card, which at first appears cool, turns
out to be worthless.
Draft: In Draft it's actually not
too bad. Its attack is totally splashable, so you don't require
Metals or Rainbows. Its also highly probable that your opponent
plays more than one Pokemon type, and, consequently, more than
one Energy type, making Magneton's Power look better. Still,
it's only 70HP, which isn't exactly impressive, and it's rare.