Mangara is certainly the stronger of the two cards, discouraging your opponents from attacking by granting you an extra card advantage if they attack with two or more creatures, or letting you draw a card when an opponent casts their second card each turn
I wanted to keep the colors so I couldn't run Valakut, the Molten Pinnacle nor did I want it to be that kind of deck
Post Malone has also hosted various Magic: The Gathering events in the past, including one in which the artist competed against a public opponent for the chance to win $100,000 (82,314)
(And that these cards are usually the rare ones) Though it's not just the actual Pokmon cards you need to consider, but the Trainer cards too as they will be the backbone of your deck - ensuring you can get the cards you need, while also providing extra abilities like healing damage
Depending on your deck, youll then know that an alternative GX attack is the best move