you have to find ways to get extra cards to have any sort of advantage over your opponents
Slagstorm 2.5 Power 2.4 Support 2.7 There are a wide array of cheap red mass removal spells of which the cube definitely wants at least one of
Lure Module is very interesting, being able to look at the top three cards of your deck, as well as your opponent, to look for any Pokmon that are on those three cards (no matter if they are basic, evolutions or part of a VUnion), just to take those Pokmon and put them in your hand and, in sequence, the other cards that are not Pokmon, you return to the deck, without suffering any harmful effects such as discards or something similar
It even has a built-in card advantage engine that lets you dig for up to two cards at once
Dress Down can strip a creature of indestructibility for a turn, giving you a window to actually destroy it
The Reaper King was tougher, because I love the way the original Jim Murray version looks, so I was afraid of trying to emulate or recreate that