That's a lot of damage, which can result in a victory on turn four already
While I definitely dont think that its going to replace Jeskas Will, it seems likely that lot of decks will play both of these cards
The bidding ends if the high bid stands
It would be one thing if it was only doubling its own counters, of which it starts with four, but it doubles the counters on all of your creatures when it attacks
Of course this doesnt mean you still cant have creature like that in the deck since Zimone might not always be on board, and you do have access to Blue which has blink and bounce effects to help reuse those cards, like Thassa Deep Dwelling, Essence Flux, or in Green Kogla the Titan Ape and Temur Sabertooth
Sacrificing a creature to populate is a steep entry cost, though, so you need to be somewhat wide before this starts to accrue value