The ideal Island to have in play while youre losing really badly, as thoughts of floating away in that balloon will really cheer you up
Its not like green has been lacking in raw card draw before this year came along
You can cast it on your opponent's turn to deal damage to them and tap their creatures by assigning at least 1 damage to each
Salvaged Manaworkers ability to convert mana colors at no cost is big, especially in a format with as many off color kicker abilities as Dominaria United
There are plenty that could be good but dont make the list because their color identity is too narrow to play in the limited cascade card space, like Mizzix, Replica Rider, Kellan, the Kid, Prosper, Tome-Bound, Satoru, the Infiltrator, and Etali, Primal Conqueror / Etali, Primal Sickness