u/Aggravating-Most-533

Hi guys, i’m upgrading my Witherbloom Pestilence deck with the +1/+1 counters and sacrifice strategy using Dina’s second ability

Here’s the decklist: https://moxfield.com/decks/P2Yls-NIR0KXB2WdZw3huw

Are these upgrades and cuts good? Is this deck viable in bracket 2/3?