I've tried various combinations of Pull/Hieroglyphic/Glimmer/telling time. Varjo and Sl33phumper covered the gist of it, but i'll try to be a bit more precise as to why I wouldn't underestimate the card even in duels.
_ I don't think you run Hieroglyphic
over Glimmer in a classical control deck, although I could see this in a low land spells matter (drake haven, engima drake, Archifiend, cryptic serpent) brew. Glimmer can be a bit slow, but it is still by far the best drawspell we have to bridge the game; and outshines pull until it is a 6 drop.
_ I think it is reasonable to consider that if you have
confirm suspicions, running a few more 2cmc answers and upping your Hieroglyphic count can be quite good over overloading on Pulls. If you can present answers on
t1 and/or
t2, then you can 2cmc answer + cycle on
t3 or present a 3cmc answer.
Likewise, you can glimmer/hieroglyphic on
t4 or cycle + 3cmc answer, and play confirm / big jace on
t5 or play a 4cmc spell + cycle.
That's a nice little flexible curve (to which confirm suspicions contributes post t5, because you can now combine lower cmc spells +cracking clues to keep going), and then can count your
t6 + spells to be chandra/sorin + gearhulk + pull + disciple.
I've been running 3 glimmer + 3 hieroglyphic + 2 Cast out + 1 pull like this in a 25 land deck, but I've also done 1 hieroglyphic + 2
telling time with the 3 glimmer and 2 cast out + 1 pull.
Both approaches have their merits and disadvantages, but I'm bigger on Hieroglyphic illumination than I was during spoilers.
The
only well performing UR control list on the pro-tour ran 4 glimmer 4 hieroglyphic 4 censor, 2 sweltering suns as cyclers + 1 pull and presented a 24 land deck this way! By making his list this lean, he actually had a fav matchup vs most of the field, and was only mildly disadvantaged vs Mardu (which still can have draws in standard that are just too fast for the deck to handle).
Having access to 2 pull seems mainly a boon in the mirror; but as stated by Light before, Variance is so important in the mirror, that it doesn't feel worth it to risk getting too many 6+ drops in hand in other matchups. I'd certainly put 1 in the SB with dispels for the mirror ofc.