Historical Rules · 17 June 2011
Rule 108.2
Official source text from the 17 June 2011 Rules release
When a rule or text on a card refers to a "card," it means only a Magic card. This includes both traditional Magic cards, which measure approximately 2.5 inches (6.3 cm) by 3.5 inches (8.8 cm) and have a "Deckmaster" back, and nontraditional Magic cards, which are oversized and have different backs. Tokens aren't considered cards--even a card that represents a token isn't considered a card for rules purposes.