In that first set, he was objectively the most powerful, with both the highest HP (a Pokmons health gauge, if you will) and the strongest attack
It was clear and obvious in the context of each individual game why Jace was so powerful but it was less clear to me why this was a general case
Combos & How to Win Thrumming Stone + Relentless Rats: cast one Rat with Thrumming Stone out and Ripple can cascade you into a board of five-plus Rats off a single card
Reward: 14x Emblem Ticket
For example, Delver of Secrets has a triggered ability occurring when you reveal an instant or sorcery from the top of your library while Bloodline Keeper has an activated ability with a cost to transform it (in this case, paying a black mana)
Archeops from Silver Tempest is an extremely powerful card, boasting one of Gym Leader Challenges strongest Abiliites: Primal Turbo