His first to come out was Fire Giants Fury seen above, followed shortly thereafter by the sure-to-be EDH powerhouse Goldspan Dragon
It seems less good because Raise Dead, Disfigure and pay a life for a card are all one mana abilities and because they cover less of a range than the other Confluences
Again, this isn't really all that great at winning a game of Commander, but it does make for a fun mini-game
There are characters that we later revealed to be from known worlds (such as Liliana being from Dominaria), but it wasn't a known thing when they were introduced
Reckless Barbarian is a fun small Dragon that can be sacrificed to provide a temporary boost of two red mana to cast a big Dragon or maybe Rohgahh ahead of time
Designed for casual fans and general consumers, boosting exposure and interest in the One Piece Card Game