The gameplay is simplified in the app, so even people that have never played the game before can compete
While the deck doesn't need a ton of counters since they aren't the most exciting spells to copy with Kalamax, the Stormsire, having more than just Temur Charm would help the deck quite a bit
Rot-Curse Raksasha isnt really seeing play at the moment, but it could fit into a new archetype starting to see play
That said, you could tune into Magic's Early Streamer events, which feature a number of popular content creators duking it out with the new cards in their own special events
Rite of Harmony can also flash back later when the player has the spare mana for it
On top of that, it also has the bonus feature of letting you configure the maximum price of the cards that you can pack