the first aid cards are actually a big help since they provide both healing to survive and discard to create copies of the parasitic cards you can afford to play. the main trickiness is keeping track of which parasitic cards you've discarded once since you've last played them so you don't accidentally discard them again ruining things. you'll also want cards for drawing. Heroic rescue allows you remove cards from the game so you can trim your deck down to 10 cards so that you can fit your entire deck into your hand making it much easier to do what you want when you want. pack healing cards beyond first aid as necessary. Also pack a stomp or a do damage+draw 1 card card so that once you are finally done abusing I believe it's parasitic succubus for gaining height you can just simply use that card to grind the weak opponent away. Although once you got 20k+ height stomp pretty much turns into an instawin by itself.