The downside is he's worth $387.49 market value, and as "low" as $260 for a Japanese version
Young Hero: Enchanted creature has Whenever this creature attacks, if its toughness is 3 or less, put a +1/+1 counter on it. Creatures can only have one role on them at a time, which makes sense given how you rarely will find the same actor playing multiple roles
The last Doctor card in the Blast from the Past set is The Eighth Doctor, a card that forces the player to mill three cards when it enters the battlefield, and then allows them to play a historic land or cast a historic permanent spell from their graveyard - whenever they use this ability, the chosen card is exiled when it leaves the battlefield
In the lead up to the release, the Enchanted cards were previewed on various websites around the net and we have the full list here
23 Spells Birds of Paradise Lightning Bolt Kird Ape Experiment One Lotus Cobra Rofellos, Llanowar Emissary Scavenging Ooze Flinthoof Boar Fauna Shaman Coiling Oracle Savage Knuckleblade Boggart Ram-Gang Shardless Agent Boon Satyr Domri Rade Flamewake Phoenix Courser of Kruphix Bloodbraid Elf Ghor-Clan Rampager Surrak, Caller of the Hunt Shaman of the Great Hunt Vengevine Thundermaw Hellkite 17 Lands 2 Forest 4 Sac lands (3 pain, 1 CitPT) 3 Dauls 3 Shocks Treetop Village Raging Ravine Kessig Wolf Run Karplusan Forest Fire-Lit Thicket Finally, for the odd choices we have Flamewake Phoenix and Fauna Shaman
