Added few cards to get into 60 cards. With 19 lands and 60 cards deck deck works just fine. So many cards in this deck have "Draw a card" that atleast for now I am happy with this.
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Atleast for now this deck has worked with those 14 lands. Few games with not enough lands. I added 2 lands into total of 16. 21 sounds like far too many lands. You need to replenish your counter/unsummon supply in your hand all the time and even with archivists over 1/3 mana ratio gives too many lands and too few other cards.