He says he has 3-4k and you suggest Raeth and Selma ?
Personaly. I would say get rid of sliman and use more 4stars, scubb, katan, sting, or any of there 4stars truthfuly just preferably those.
Some cards you should grab that are cheap and good are kalder coleridge baba, get scubb while hes cheap and katan when you can.
a deck you can start with after getting the first 4 mentioned cards is kalder coleridge baba scubb kristen ector taljion ...then pick one of these 3 cards as your last card (tyd deadeye andsom) i prefer tyd but some like deadeye's damage matched with some pill manip like scubb and pill eaters like taljion while others love the threat of -3 opp pillz with andsom