What is a token in Yu-Gi-Oh?

Answer 1

A token is a marker representing amonsteron the field, though they can only be summoned by a card effect such as Scapegoat's. The token's statistics are listed on the card that summons them. They are treated as "cards" in almost every way: they can be tributed, destroyed, etc.

The Spell Scapegoat puts 4 tokens on your field, but you can't use this card if you don't have 4 free monster zones. Use coins, dice, etc. to represent the tokens. Tokens, like monsters, can't be destroyed by Heavy Storm (Spell that destroys all Spells and Traps on the field). The 4 tokens count as Defense-position monsters guarding your Life Points.

However, tokens cannot be flipped face-down (they're always face-up), and if an effect tries to remove them from the field (destroy, banish), then they simply disappear.Thus, Book of Moon (Spell that flips 1 face-up monster into face-down Defense position) can't target a token.

Tokens CAN be targeted by Spells and Traps like Enemy Controller (except cards like Book of Moon).