These cards show her progression, even in mechanics, as her second card is slightly stronger
This card is good when you are behind in the match because of its ability, Excited Heart , which makes its attack cost an Energy less for each Prize Card your opponent has claimed
And yes, were drawing our opponents tons of cards in the process too, but I bet you that nobody else is getting 10+ mana discounts on their spells like were doing with Heliod, so only we get to utilize all that draw effectively
Yes, you have to discard three random cards at your next upkeep, but in an ideal world, the three cards you draw can all be used before your next upkeep, leaving you with just lands or an empty hand to discard.
At other given times, there might be no viable sellers of specific cards