Note this is entirely pointless because there is nothing that Starmie can do with the fourth water energy card
It also makes for a great Ring-bearer
By paying two life and one black mana, you give a creature -1/-1 for the turn
The real payoff comes when creatures with counters die, turning those deaths into Treasure tokens, fitting perfectly in grindy goblin builds that want value from combat and benefit from repeated creature deaths
Also, her ability obviously hints at you getting rid of her hexproof to kill a pesky artifact or enchantment, but it doesnt say it has to be that type of counter
The Beta set is especially notable for its inclusion of Magic: The Gatherings Power Nine - a series of nine cards featured in the card games early Alpha, Beta and Unlimited sets that are widely considered to be the most powerful Magic: The Gathering cards ever made