We can take something that seems like a negative and turn it into a positive
You then get to put a +1/+1 counter on a creature, which can be good on so, so many cards I think Ill leave that to the imagination (though I like the idea of Sharktocrab), and the creature gains flying until end of turn
If youre deciding between these, the split is intent: Oloro/Vito want to drain, Heliod/Lathiel/Trelasarra want to go tall/wide with counters, and Karlov/Licia want to attack
Well, if you want to play Ob Nixilis in Modern, thats a bulk rare with a better version of the same ability for two mana less
But if it only provides buffs like Teysa Karlov or Jetmir, Nexus of Revels , you should run more