Playing aggressively against flash decks works well, as they get easily overwhelmed by hordes of cheap spells or small creatures
The ones that actually make it into our decks
Life gain against aggressive strategies, card advantage against decks wanting to grind, mana to give you a needed explosive turn to catch up these are just some of the most useful functions it serves in different spots
Modern Horizons 2s Pitch Elementals This cycle from Modern Horizons 2 has five pitch creatures, creatures that you can evoke by exiling (pitching) a card from your hand of that color
Starfield Vocalist Starfield Vocalist's ability to double any enter triggers under your control makes it one you'd definitely want to keep around longer than a single turn, but warping it just as you're about to play a big effect is definitely a good play
Essence Channeler's first ability cares whether you've lost life this turn, not how your life total has changed