To do this, you will need to have creatures in play, be those permanent or tokens, so while card draw and stations are the primary mechanics, you'll still need to ensure you have ways of getting creatures into play and protecting them long enough to charge up your space stations
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Type #1 Cards That Allow Creatures To Change Their Creature Type We begin, of course, with the Mistforms themselves
Still, players sticking to mono-black arent entirely bereft of mill options, with cards like Dread Summons and Breach the Multiverse able to eke out a narrow win before it comes back around to your draw step Additionally, Doomsday Excruciator can work as a reliable extra source of card draw and damage without risk if reanimated or otherwise cheated onto the battlefield without casting
A Dion, Bahamut's Dominant Commander deck is a Knight Typal deck, meaning it's a deck that focuses primarily on one creature type, in this case, Knights
Memory Lapse is also pretty much a hard counter when used to force something through and/or when you can win the game in that turn as a result, a little like Pact of Negation