Again, when were putting +1/+1 counters on other players creatures, we have to be careful
They were a half-size apart, but yes, I did get festive about it and wear a different color on each foot some days
Scavenging Ooze has to be one of my favorite Standard creatures of all time, and while I think it's a nice reprint it feels outclassed compared to Tranquil Frillback, which can also deal with Artifacts or Enchantments
If a permanent that's already on the battlefield without time counters on it becomes a copy of a permanent with vanishing, it will stay on the battlefield indefinitely (unless time counters are somehow put on it later)
A few tips for getting started with deck building
I remember thinking that Mathas, Fiend Seeker was going to be the perfect overlap of Group Hug and Group Slug decks, benefiting off creatures dying by spreading card advantage to the rest of the table