It will source its cards from Japans The Glory of Team Rocket (releasing April 18th), Heat Wave Arena (March 14th), and the Marnie and Steven decks (February 21st)
Pocket gets a new booster pack or expansion every month, for the most part
Haste is a great ability to have, but the lack of trample really makes Eron seem lackluster compared to Ball Lightning or even Yavimaya Ants
3 Claustrophobia There are a lot of cards that eschew the fantastic elements of the game in exchange for playing up the visceral, deep-seated fears people have in the pit of their guts
I think this card is basically 100% overkill and would look to other ways to draw cards in Limited, Standard, and EDH
The trading card game, in particular, was a runaway success for the property and is still going strong today