Toward the end of the game, use [BT14-037 MagnaAngemon ACE] to recover security cards and use the DP-reducing effect to weaken or remove opponent cards
Heck, there are even cards that reference a D&D game that the designers played (Ill get to that)
Whenever a feline friend falls, he transforms into a planeswalker, boosting your remaining cats and potentially creating another cat ally (with the bonus of throwing around some damage if you have a red permanent)
Design is free, every order ships in 2-3 days with a free case, and it's all made in the USA
For 3 Energy (2x Grass, 1x Colorless), it does 80 DMG, and that goes to 150 DMG if you get heads from a coin flip (Will Supporter card, anyone?)