That makes Recoil one of those cards that has a hard time being bad until the point when your opponent has extra lands they can hold in their hand in order to discard them, at which point most decks that run Recoil are either using that as an excuse to crank up the discard engine or more likely happy enough to have survived this long that they don't care
For many playtest cards, you'll need to make a generous assumption that basic game rules would be updated to allow them to work
Deep Clue Sea is a deck centered around investigating and Clue tokens
All opposing creature damage
But once all our slivers gain devoid, suddenly they are are able to take advantage of spells that look for one or more colors on permanents
While X spells don't always thrive there, given the prevalence of "cast without paying its mana cost" effects that like to cast them for zero, many consider ElectrodominanceElectrodominance worth the risk because it allows you to burn an opponent out with all the mana you've acquired from your rituals, then tack another spell on to continue the process for others