When Steam Stronghold enters the battlefield, return a land you control to its owner's hand.
: Add or to your mana pool.
: Steam Stronghold becomes a 2/1 red and black Giant creature until end of turn. It's still a land.
: Add 
or 
to your mana pool.: Steam Stronghold becomes a 2/1 red and black Giant creature until end of turn. It's still a land.
