Strong card draw and no mana needed, just tap away
The real reason to stay mono-green, Voracious Hydra is just an absurd Magic card and should likely be in all three of these lists as a four-of in the maindeck
You get Wildcards by opening boosters, competing in events, and winning games to beat your daily and weekly challenges - so if you're short on Wildcards for the shiny new Arena deck you want to build, the best thing to do is get playing with the decks you already have
This digital option with free cards will lower the barrier to entry for players. As someone who hasnt opened a physical pack of Pokmon cards for probably 15 years and has only dabbled in the trading card game, I can that I had an absolute blast opening booster packs to add to my Pocket collection
I will point out that the third version, with some hindsight, was a little less optimal than I would have liked for my example
Disappointing, I know, but its the best weve got until they print a nice juicy legendary Goat lord