Its nice to see a new card type strike a good balance between providing room for innovation without being too powerful or too weak
Once Derevi is on the battlefield, the common strategies involving it are either to go wide with a lot of evasive creatures to generate absurd amounts of mana from lands and mana rocks or to start tapping things down in tandem with Stax cards like Stasis and Winter Orb to create an incredibly tight stranglehold over the board
To start powering up your creatures, you have cards like Idolized, which gives your enchanted creature +X/+X for each nonland permanent you control when you attack alone, which only gets better if youre able to stockpile some Junk or Treasure tokens for a bit
Sure, they got back to your command zone at the beginning of the next end step, but in the right decks, thats all you need to get the job done
It's had countless imitators and its biggest fans are the most celebrated underdog demographic in the game