How about winning with Unown Hand in Expanded? You can draw 15 cards in one turn by using Dual Brains Magnezone, Whitney, and VS Seeker. Combine this with the Sableye that prevents your opponent from playing a supporter (N) and you can win if you pull it off!
Outside of there are Red Card, that one cute psychic Pokemon and other ways to reduce your hand-size.
The biggest problem with the hand deck, is that you are not allowed to waste any cards. In unlimited this would be easy, as you just get to LTC the discard pile, but in Expanded you aren't that lucky. 6 prize cards, Unown, Magnezone, Magnemite, Rare Candy, VS Seeker, 4 Witney (or 1+ 1 Pal Pad to shuffle 3 of them back), Sable Eye, […]. Drawing 35 cards in a game isn't difficult at all. Having 35 cards in your hand is almost impossible (speaking on a competitive level here).
The shadows of the abyss are like the petals of a monstrous flower that shall blossom within the skull and expand the mind beyond what any man can bear, but whether it decays under the earth or above on green fields, or out to sea or in the very air, all shall come to revelation, and to revel, in the knowledge of the strangling fruit - and the hand of the sinner shall rejoice, for there is no sin in shadow or in light that the seeds of the dead cannot forgive...