basic mewtwo pokemon card Prices & Values - EX, VMAX, GX Cards Evolves from null Type Mewtwo - Base Set -

Of those, Star Birth is the main source material as it is the only main set

Part of this is due to flashback letting you use it twice, and part of it is the political angle for Commander: You can put counters on other players permanents to strike deals or maybe enhance cards like Generous Patron and Nils, Discipline Enforcer

A thorough examination of the card (and Merfolk in general) can be found here

But as we put more and more cards into our deck that abuse the delve mechanic, we are slowly forced to enable it

When that land dies or is exiled, it isn't a creature anymore, but it comes back to serve its original purpose as a land

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