The RNG in this game hates you, and it wants to hurt you
the Gaping Dragon from Dark Souls 1
Lands (22) Spells (38) 2 Brainstorm 4 Counterspell 4 Force of Will 4 Accumulated Knowledge 1 Impulse 1 Capsize 3 Intuition 4 Merchant Scroll 4 Donate 4 Illusions of Grandeur 4 Sapphire Medallion 3 Fire Sideboard The combo of Donate + Illusions of Grandeur seemed over the top in those days, giving you a twenty life boost and saddling your opponent with a liability that would rapidly become unwieldy (and take twenty life points with it when they couldnt keep up)
Which means it's going to have a huge impact on deckbuilding
Leader Smoker has a built-in cost-reduction effect, but the list has tons of cost-reducers like Helmeppo, Hina, and Ice Age, to help you set up your KO effects
I would recommend using Flash Freeze every turn, but if you don't have enough energy cards to use Flash Freeze, you'll have to use Dual Claw instead, just hope you have some luck when using this move