The +1 that gives you two mana is very good
Each artist brings their own unique style to the cards which makes them entirely distinct, and Brilliant Stars Zekrom Trainer Gallery card is no exception
Logistically, the value of the deck is almost entirely tied to two cards thatll likely tank in price, though having those reprinted is a big deal
It's not a huge amount of value, but when you consider the fact that you have three opponents, plus anything you do, you can draw upwards of four cards and make four tokens by the time your turn comes back around
The combo potential is where it really gets nasty: pairing it with Maralen of the Mornsong removes searching entirely, while setups involving Eye of the Storm, Hive Mind, and Enduring Ideal or Eternal Dominion create game states that simply cant progress
In other words, you have a much higher chance of putting a creature face down