While it might seem like the point is to damage myself, that is just secondary. The point is to damage my opponent with incredibly high damaging attacks. That these attacks also end up harming my own Pokemon is just additional. Anyways, I damage the foe (and myself) enough in the process that Gigalith can come in and wreck everything.
x2 Roggenrola: http://serebii.net/card/emergingpowers/049.shtml
-Harden can at least stall. Other Roggenrola's suck. I'm not even using the one that damages itself because a measly 30 damage is not worth it.
x2 Boldore: http://serebii.net/card/dragonsexalted/066.shtml
-As always I am a sucker for infinite damage attacks. Add to that a three for 60 that happens to also damage my bench and I'm sold.
x2 Gigalith: http://serebii.net/card/dragonsexalted/067.shtml
-A three for 10. That does 10 more damage for each damage counter on my bench. I can easily get the 200 damage needed to take down most Pokemon. And it doesn't need a weakened bench in order to do damage. It does have a four for 120 (that damages itself, strengthening the second Gigalith if I Switch out.)
x3 Electrike: http://serebii.net/card/dragonsexalted/041.shtml
-Needed for evolution.
x2 Manectric: http://serebii.net/card/dragonsexalted/043.shtml
-A one energy attack that does 20 damage times the number of energy attached to all of my opponent's Pokemon. Oh yeah, that is a lot of damage. And if I happen to be up against a deck that uses Jumpluff, I have a backup three for 80 attack. Oh, and that three for 80 does 20 damage to my bench.
x4 Zekrom: http://serebii.net/card/nextdestinies/050.shtml
-130 HP basic. One that has a three for 120 that does 40 damage to Zekrom. And besides helping out Gigalith, this also helps Outrage become more powerful.
x4 Landorus: http://serebii.net/card/noblevictories/074.shtml
-Helping out with basic destruction along with Zekrom is the leader of the Kami trio. Unlike another powerful basic in the Noble Victories set, Terrakion, Landorus has only one retreat cost as opposed to four. Granted it has 20 less HP, but it does have an Electric resistance. Abundant Harvest can help it set up the powerful Gaia Hammer, a three for 80 that does 10 damage to every benched Pokemon. This means that not only is my foe getting damaged by I'm also helping out Gigalith (and sometimes Zekrom).
x4 Switch: http://serebii.net/card/blackwhite/104.shtml
-Some of these Pokemon, especially the Gigalith line, have very high retreat costs. So I'm using Switch. It gets out my Pokemon when they end up getting too damaged.
x4 Pokemon Catcher: http://serebii.net/card/emergingpowers/095.shtml
-Forces out the opposing Pokemon I want to be annihilated.
x4 Super Rod: http://serebii.net/card/noblevictories/095.shtml
-Gets back Pokemon and Energy.
x4 Silver Mirror: http://serebii.net/card/megalocannon/069.shtml
-This deck has no EX cards because I don't want them being KOd by my own attacks. So to even up the playing field against EX cards, I added Silver Mirror to the deck.
x4 Cheren: http://serebii.net/card/emergingpowers/091.shtml
x3 Revive: http://serebii.net/card/blackwhite/102.shtml
-When Zekrom and Landorus go down, I can just get them back with Revive.
x2 Cilan: http://serebii.net/card/nextdestinies/086.shtml
x2 Professor Juniper: http://serebii.net/card/blackwhite/101.shtml
x1 Computer Search: http://serebii.net/card/boundariescrossed/137.shtml
-Gets me any card I want.
x4 Blend Energy WLFM: http://serebii.net/card/dragonsexalted/118.shtml