For three Colorless and three Black Mana you can summon a 5/5 Demons that TAPS to Destroy 1 land. The drawback however is that you must Pay three Black Mana during your upkeep or the Hordes become tapped and you lose a land of opponents choice. I do have one of these in my Old Skewl Black deck, because I really like the card, but having too many will leave you with little Mana for anything else
Vanille, Cheerful l'Cie (and Fang, Fearless l'Cie) I've always loved meld as a mechanic, as it's a great reward for a task that's difficult but not impossible
The English-speaking market has its own exclusives occasionally (like prerelease stamped cards or cards in exclusive boxes), but Japans promotional tie-ins are more frequent
Roaring Moon Ex Automatic Knock-Outs Without (Many) Drawbacks Type: Darkness HP: 230 Attack 1: Frenzied Gouging
It also introducedTechnical Machine cards, which allow the Pokmon they are attached to use an attack as specified on the card (a reference to theTMin thecore seriesgames)
Sazh's a great bird tutor, or basic land tutor, depending what you need