Here are the most effective ways to play around discard strategies: Draw a bunch of cards consistently, which is unfortunately something that some colors struggle to do (blue card draw and green card draw tend to be the best)
For example, if you haven't drawn any cards yet during a turn and cast a spell that instructs you to draw three cards, you'll draw them one at a time
It was often paired with Malcator's Watcher, but Magic: The Gathering has plenty of ways to push this cards potential even further
It is not the most reliable of pure life gain effects as all kinds of removal can really set you back in tempo and will therefore almost certainly finish you off given that you were trying to gain more life
For more info on how to do that, checkout our Disney Lorcana deck building guide.
The only upside is the ability to cheat on the mana for an equip cost, which is already a pretty situational benefit