That card is horrible in this deck, by the way, so there's your first upgrade - literally any other removal spell
Yawgmoth's Bargain Yawgmoth's Bargain is one of Magic's best black enchantments and the sort of game-breaking card that I find really cool
Flash this in on your opponents end step to ensure you at least get one Faerie token out of Bitterbloom Bearer, and then have it ready to swing and attack straight away
It is quite easy to control how much this shoots for
Take Controvert: A full-range counterspell sure is nice, but at 4 mana it's prohibitively expensive
Not only does this mean the number of times you can activate the abilities are limited (by my count, Esper Dragons, the tier one deck that runs the most spells in standard, plays 25 instants/sorceries), but also that Disciple of the Ring is directly competing for the same resource as extremely powerful delve cards like Tasigur, the Golden Fang and Dig Through Time and also a nonbo with the new spell mastery mechanic