Sram slow deck - its very default mill deck, look video first game episode there explain its win-condition.
Sram necro - little bit faster with second win-condition Necro, works against other mill decks or as second win-condition in bad match.
(remember you can use Arachnee on 4AP Necro card to return it and cast again to speedup building Necro 5Ap card)
Sadida deck - cast Vampyro at least twice, and then just use Psycopath and return it to your hand, Youtube video one full game vs top2 season player https://youtu.be/1HCPbb0alcA
(and remember Miranda + Bush is very strong win-condition or counter)