My Diamond and Pearl - Arceus block deck, Gardy Gallade with Nidoqueen and Nidoking.
The deck is a throwback to when I first started playing PTCG. Although packed full of Stage 2 Pokemon, it has a lot of power thanks to Gardevoir and Gallade. The Nidoking's Poke Body can help fix math; the Nidoqueen can protect you from spread decks (and can even attack sometimes). I do not rely on Spiritomb in this build, as I prefer it in other decks nor am I super Trainer reliant. 2 Lucians allows to really keep your Pokemon alive and attacking longer. The deck is probably one of my favorites of its time. Exciting matchups to play are Dusknoir/Cresselia and QueenGar.
I give it 4 out of 5 "Prism Stars" because I do have it a bit teched out with lots of one-ofs.