It is each players own responsibility to keep track of when their own triggers are being met and keep their board state accurately updated based on that
The transform condition is unlikely to happen, so Im largely ignoring Aurora of Emrakul
In a rebel tribal or token-focused build, Barret brings both steady board presence and a way to make sure your creatures never enter combat empty-handed
It remains playable late-game because it cantrips itself
Long term players will be familiar with the mechanic of transforming from a human form on one side to a werewolf on the other, but the new global day-night cycle offers a significant twist, meaning that a card can enter play as a werewolf if its nighttime
To help navigate that choice, consider three factors: Your land count : If youre light on mana, chances are your hand is full of spells, so playing the card for its normal cost may help you influence the board more efficiently