Using Passimian ex as a sacrificial, chip-damaging energy farm is a risky tactic, but with Brock in the deck too, it basically guarantees the ability to instantly set up a Golem and sweep through the rest of your opponents team
She cannot be played with much counter magic and is weak with combat tricks, various silver bullets or random answer cards
However, the questions do not end there
Merfolk Looter is still a decent card, it allows you to see more cards, avoiding non-games and providing you more option
Boxing Ring: Green has never been great at removing creatures, but a two-drop artifact that allows your creatures to fight enemy creatures and then create a treasure if they fought this turn is a decent way to help clear the way for your big stompy bodies to get through for combat damage
It's possible a previous owner replaced the battery : Because these games are out of production, there is a chance that you may be purchasing a copy from someone who replaced the battery (which is ok if it was done correctly)