The other piece of advice I have gotten from more seasoned collectors is simply taking a step back and revisiting the things you have already acquired (this is why binder collections or wall displays, for example, can be so useful)
The first player to start missing land drops in this match-up will usually find themselves at a severe disadvantage, so having more lands/ways to find land makes sense
For example, if your life total is 4 when Providence resolves, it will cause you to gain 22 life
You can tap any three untapped Zombies you control, including ones you havent controlled continuously since the beginning of your most recent turn, to pay the cost of Cryptbreakers second activated ability
(11/10/2020) To determine the total cost of a spell, start with the mana cost or alternative cost you're paying, add any cost increases (such as the commander tax), then apply any cost reductions (such as that of Dargo's first ability)