In the anime, his cheeks turn yellow when he is preparing to electrify something
This is done by placing an evolution card from your hand over the prior Pokmon (any attached cards and damage counters stick around), and evolution cards always denote what Pokmon they evolve from
Titania, Gaea Incarnate Titania was the protector, and often considered a goddess, of the Argoth forest on the plane of Dominaria during The Brothers War
If the copied creature was copying something else, then the token enters the battlefield as whatever that creature copied, with the exceptions noted above
In EDH decks that benefit from playing cards from exile, like with Prosper, Tome-Bound or other play-from-exile commander, this is another matter entirely
The main thing to look for here is whether the card's number is higher than the total number of cards in the set