Although vulnerable to good spot and mass removal the EtB effect of Atarka means you are still pretty ahead if they do remove it
While spending five mana for a 2/4 evasion creature might seem weak, the Angel can hold back an entire horde of attacking ground creatures indefinitely
So, even though the mechanic comes with a certain quantity of complexity to its name due to the decisions that it forces the player to take, I still think Evendo, Waking HavenEvendo, Waking Haven is so clearly powerful and synergistic with itself that it deserves the title
As for the gameplay there's little amount of assist on the game's part, but you the player, have substantial control of creating tokens, adjusting amounts, and paying complicated costs
Dragons of Tarkir (2015) had two nice variants of Card not found