Cheapest priced copy (Avatar: The Last Airbender): $0.35 at Card Kingdom, near mint, their price list as of .
Platypus-Bear 
Creature — Platypus Bear · 2/3 · Common · Avatar: The Last Airbender · #236
Defender
When this creature enters, mill two cards. (Put the top two cards of your library into your graveyard.)
As long as there is a Lesson card in your graveyard, this creature can attack as though it didn't have defender.
Legal inCommanderBrawlStandardPioneerModernLegacyVintagePauper
1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Avatar: The Last Airbender | 236 | Common | $0.35 | $0.49 |
One ruling from Wizards of the Coast
- 2 October 2025Once Platypus-Bear has attacked, it will remain an attacking creature for that combat, even if the Lesson card is removed from your graveyard.