A single stun counter will be removed if the permanent tries to untap for any reason, including its controller's untap step, a spell or ability trying to untap it, or even its controller trying to untap it to pay a cost (although that one's unusual)
For a deeper look at price evolution in the vintage market, see our detailed Charizard 1st Edition price analysis
This isnt a precon-level commander
Wield Sauron and your Orc Armies in a devastating victory
The last ability of Clive's Hideaway will allow you to cast both exiled cards without paying their mana costs (assuming you control four or more legendary creatures at that time.) In a Two-Headed Giant game, Traveling Chocobo's second ability does not affect triggered abilities of permanents your teammate controls
Where Bedlam Reveler shines is against the fairer creature matchups, where the decks burn spells tend to get pointed at creatures rather than the opponent