[Code for the deck](https://preview.redd.it/8z42039qfmmh1.png?width=355&format=png&auto=webp&s=37bff46b7b8df4fad07e0e4e914b1be1c9432595)

Just as the titles says... What if hydreigon... Was a cactus?

Deck is simple, Happiny activates Cacturne's move effect while buffing the move, with Dawn Darkrai ping and Deceptive needle, going first allows you to deal a whopping 130 damage by turn 3. Thats basically hydreigon with half the effort of having the pull rare candy and the card by itself.   
Don't have dawn? Still fine, you're hitting for 90 damage by turn 3. That outpaces the damage of almost every single deck that isn't highroll hydreigon and kills a majority of basic pokemon that are used as win conditions. Best thing is they don't expect it, they never seen what cacturne do in their life.   
There are 3 good leads, happiny, cacnea, and hoopa. Darkrai leads kill games, just concede if darkrai lead. Essentially, you have a good lead 85% of the time, and if you roll a research, you have more than 60% chances to draw your Diet Hydreigon™ or Dawn by turn 3. This leads to very consistent and quite frightening turn 1 wins.  
Try the deck out for yourself, quite fun and refreshing compared to what the meta looks like right now for dark decks.

What if Hydreigon was a stage 1 one pointer?