There are 13 cards in Invasion and Planeshift combined that create creature tokens. Most of their offspring are covered by the fine people in Player Rewards, from Assault/Battery's Elephant to Aura Mutation's Saprolings to March of Souls' Spirits.
Just as we showed earlier for a few Judgment cards, these tokens do have art associated with them, art that is visible in Magic Online. If you create a Reflection or Hippo token online, here's what you'll see:
|Planeshift Hippo (1/1)
Artist: Jeff Laubenstein
Made for: Questing Phelddagrif
|Invasion Reflection (*/* Reflection's power and toughness are each equal to the converted mana cost of the last played creature spell.)
Artist: Ron Spears
Made for: Pure Reflection