While not splashing into other colors very well, it does fairly well in a white devotion deck, and feels like the most traditionally white mana of all the cards in AFR
Dueling Nexus Players, welcome, this deck is called Fiend Negate
For example, characters like Aang, Katara, and Sokka all have a card dedicated to them in one or two colors, gradually progressing to three or more colors
Polymorphous Rush is an instant spell, this would be a scenario I would use it main phase one
There are plenty of creature-based strategies to choose from, or tons of combos to build around to maximize the chaos Goblins bring to the table
Firstly, when a card is destroyed by a card effect (except this cards effect, or else youd be stuck in some horrible recursive loop forever) then you can target and destroy another card on the field