The 'can't block' effect is limited to small critters
Most Pokmon cards dont offer high returns, but a select few are valuable due to scarcity and features like trophy status, holography, or Japanese origin
We can even help you answer the twin age-old questions - how many Pokmon are there, and how many Pokmon cards are there?
The problem with this was that players could, for example, trigger a Werewolf by playing no spells that turn and then, when the trigger was on the stack, play instants
They can be used in good faith, or for ill, and the verdict on how problematic a card can be is more complex than whats written on it: it requires context of how and when its played, with what cards it is played, and in what scenario
The only reason this sits so low is because of its potential negative effect