In other words, these cards can only go into a Commander deck with at least in its color identity
This puts counters on creatures which isn't just good with Simic cards in this set - it's good with creatures with Graft, Evolve and if you have proliferate it can even start growing creatures with no abilities
Treasure Nabber is such a unique card but oh-so-very-Goblin in how it functions, making it an excellent inclusion for a Goblin Commander strategy for power and flavor reasons
You can tutor out important artifacts to combo with for five mana and then still have the ability to get some extra juice out the next turn
The aetherborn are energy vampires , just to talk about unexplored design space
Like Mewtwo-EX, it can currently be played in the games expanded format, making this Ultra Rare card a hot commodity for competitive players and collectors alike