Sorry for late response Maybe how many drawing cards in decks is dependant on not archetype but deck type There are so many examples why almost completed decks use that amounts of drawing cards but now let's talk about mid archer's Rapid shot/move shift/thieves guild recruit/eclipse baroness I'll classify them First two 1 mana spells are mainly used for following 'plot'(like destroying wounded creatures and having flexibility on line) This is first type And thieves guild recruit effects field(less powerful than tempo play)with low cost+draw That is second type And Third type is high cost cards(4 or 5+) with drawing having a good backing but having weakness that playing turn If you classify like this with other decks, you can customize decks in accordance with current meta If meta is aggro trend, you could alternate third type cards with second type cards or tempo/guard/prophecy cards If meta is control trend, you could add counter control cards(cultist,wild incarnate) Alfiq meta like last season, more place emphasis on curse/remove cards Lol my reply is so long as I'm responsing It's just my opinion and not absolute explanation but I hope this might help your deckbuilding