Ishi-Ishi, Akki Crackshot

Hatebears were not a developed concept yet when this little Goblin arrived to tax a single mechanic out of existence, and the narrow scope is the whole point: it punishes opponents specifically for casting Spirit or Arcane spells, the two interlocking tags that defined an entire block's spell-matters identity. Against a deck that ignores those tags it is a 1/1 with an ability that never fires, a body and nothing more. Across the table from splice, channel, and Spirit synergies, every spell becomes a 2-damage Pavlovian shock to the caster, and the clock adds up fast over a long game. The design tension is that it is a metagame card masquerading as a creature: its power floats entirely with how committed the opponent is to the mechanic it hates, which means it lives or dies by what they are doing rather than anything you do with it. That makes it a precise build-around-the-opponent answer in creature clothing, the kind of silver bullet later sets would broaden to punish a whole color or strategy rather than one block's keyword pair. It is a clean example of the punisher template from an era when tax-and-burn effects on small bodies were still being figured out: it asks the opponent to walk into it, trusting that the spells they most want to cast are exactly the ones it names.