Yes, current enfranchised players love Modern, and some even love Legacy and Vintage, but adding 25 years of cards to Arena , along with a bunch more events to support these cards, hugely increases the complexity for new and intermediate players, who mostly play Standard and Limited anyway
Upgrades are simple since its a matter of filling the deck with the best character cards
Stepping out of ancient times comes a Pokemon so mighty that legends say it shaped the universe itself
+1: Put a +1/+1 counter on up to one target creature
They were basically identical to the international card back design except they had a red border and red text across the middle saying which deck they were part of
With her boltgun, power sword, psyker abilities, and sweet hat, she'll investigate creatures for heresy, all while inspiring her own troops to fight for the God-Emperor of Mankind