This time were only getting two starter decks instead of three, which is fine by me
In decks like Ad Nauseam + Tendrils, the card is used either to get enough storm count by drawing free spells or to find your Tendrils of Agony win condition
It was even the target of the nerfs for the new Alchemy format, and its still making a LOT of noise there too
The deck may be a bit of a glass cannon, even if it aims to play for the long game, but I think its fair to say that Gavi can be built in any number of ways, including dedicating an even higher ratio of the deck to cycling
Even with the once-per-turn restriction, which prevents easy infinite loops, the incremental advantage is staggering
Include a mix of color-fixing lands, utility lands, and basic lands for a strong mana base