The most powerful strategy at the time "Duelist Alliance" was released was Shaddoll, and the deck contained multiple extremely strong boss monsters
While a fair card by cube standards in terms of power level it is a uniquely positioned card that winds up seeing more play than any of the other creatures that generate cards when they attack like the classic Ophidians and Shadowmages.Viper is a win more card like those others but Viper is substantially better when behind and actually does relevant work
The stax pieces help bring other decks, especially unfair ones, to your level, giving you more time to get in with your creatures before finding a finisher
During your End Phase: You can choose 1 "Phantoche" monster in your hand
[C][C] Take-Down: 80 damage
This is pretty annoying, because youll be unable to platinum the game unless you can get that Ranked/Player Match trophy, and unless you find somebody wholl take their loss, you might not ever get the plat