Ojer Axonil also has a very strong ability
Red also has plenty of great cards, like Jeska's Will, which is also being reprinted with a new name in the Storm drop
If you decide to lean into milling yourself and sacrificing creatures like I have for my deck, I would recommend stepping away from non-creature spells and do your removal in creature form
Try Garruk, Unleashed in Standard, Brawl, or Historic
Youll lose some of the synergies that you have with your goblin cards, but it'll ensure that a larger percentage of your cards generate extra creatures for Purphoross ability
Pokemon TCG Pocket is aiming to be a more casual and beginner-friendly version of the regular Trading Card Game, but you can bet theres going to be a meta and cards that are just better than others