This era marks the birth of the Pokmon TCG in Japan, and the cards from this period are iconic among collectors
The most likely reasons are if it's sacrificed, if it's legendary and another legendary permanent with the same name is controlled by the same player, if it's a planeswalker and another planeswalker with the same subtype is controlled by the same player, if it's a creature with toughness 0 or less, or if it's an Aura that's either unattached or attached to something illegal
This is a weird match-up where you can be the aggressor, play the long game with your opponent, or a little of both, depending on what cards they have
Excalibur II is significantly more affordable than Genji Glove at just one mana to cast
For example, decks led by owyn, Shieldmaiden thrives on a high count of Human creatures to maximize her token generation and card draw abilities