Unexplainable +1/+1 Counters on Scurry Oak
I was at a Historic Bo1 event vs a Selesnya Lifegain/Combo deck. On the penultimate turn, my opponent has a number of lands, 3 Soul Warden and a Scurry Oak on the field (not Heliod nor Cleric Class), then they proceed to cast a Collected Company which spawns a Skyclave Apparition and a Voice of the Blessed, and yet Scurry Oak somehow got two +1/+1 counters and created a couple of tokens that ultimately gave Voice of the Blessed more triggers and indestructibility. I have played several times with and against that deck, I stopped to exhaustively review the field to see if I missed any effect (log attached) and I don't understand that additional counters if it is not due to a bug or a hack. I hope you can review the case, thank you very much.