Color Identity A card's color identity can come from any part of that card, including its casting cost and any mana symbols in its text
And thinking that there is the setback of "losing" energies with this, you can take advantage of the combo with Melony CRE 146 to attach a water energy from the discard pile to one of your Pokmon-V (either V, VMax, VUnion or VStar, never mind) in play and still drawing 3 cards
Mewtwo EX Mewtwo EX is an incredibly strong card for several reasons
Getting back to Gruul - this is a fantastic way to deal out a little pain and drop a huge fatty onto the table
For The Phasing of Zhalfir (and, in fact, all Dominaria United Sagas), that means it can enter with one, two, or three lore counters on it