2004-10-04 If mana or other costs need to be spent at resolution of the spell, the player of Fork would still be responsible for paying that cost
You kill any problem, draw a card and flop out a huge problem of your own
Then you use the creatures that enter the battlefield from your library or graveyard to fuel Cabal Ritual and Dread Return, which require you to sacrifice creatures
Since we're a Vehicles deck and all vehicles are artifacts, it makes sense to take advantage of artifact synergies, which I deliberately steered the deck into: we're running all the artifact mana cost discounts from Foundry Inspector to Semblance Anvil, drawing cards off Canoptek Spyder and Sanwell, Avenger Ace, and protecting our board with Leonin Abunas and Bronze Guardian
But either way, Karn is the top end card that you're looking for
A very dominant card in its Standard era