To resolve this, you should strongly consider using a wired internet connection if youre not already
No need to track 21 commander damage, just one clean hit and an opponent is out
Like a Mono-Green Krenko for Squirrels, she lets you double your tokens via her activated ability
Commander has a ton of powerful ways to generate a bunch of mana, and turning that mana into cards, life, and a Jellyfish Hydra Beast that flies and tramples is pretty much everything you want to be doing in the format
That means with haste you could cast Ureni, swing for 7 flying, and draw + put two more dragons on the battlefield
Whether or not any of these would work, however, remained to be seen, as none of these plans had been implemented