Mostly seems like it is going to see play in some kind of deck that really wants to make a lot of birds, maybe a "the birds" themed Hitchcock deck
As that ability resolves, if the creature has a +1/+1 counter on it for any reason, you simply won't put any +1/+1 counters on it
Vehicles with trample will be best for accomplishing this task since you need to deal combat damage to a player
The goal was to make it not another Golos deck. Whilst Ive hit some of those notes, like in the manabase, I have tried to direct my card choices toward a mechanical theme
In Magic: The Gathering, an early-round mana boost can be game-changing, and Mana Vault is one of the most cost-effective ways to achieve this, especially if it's played alongside cards with an untap effect
The thing I really don't like about Morbid OpportunistMorbid Opportunist, though, is that it fails to do the most important thing for a creature deck: Help you recover or even punish a board wipe