The deck might run out of steam on a turn, but its not really a big problem, as its usually left 3 large creatures on the table when it does, and you can start the loop again easily enough by casting whatever your cheapest card is (Aside: In Legacy your cheapest card costs 1 mana, its Summoners Pact ^_^) One thing to notice about this version of the deck is that I was able to put it together without buying any cards from TDM at all
If you look closely at the card youll find tons of fun interactions between the members, almost like a wheres Waldo of One Piece
(6/8/2018) Assist allows another player to pay for any amount of generic mana
Board wipes usually reset an aggro players progress, but the Forge sits safely as an artifact, ready to churn out another, even larger threat the very next turn
Gavi only asks you to cycle once to get the full effect and I think that lends itself to a more midrange deck
Quest too hard, and you leave your board open