This is only one of two reprints of this card that exist despite its playable effect, and it is the most expensive of them all, thanks to the amazing artwork taking the words Swan and song literally
Be careful with what you intend to name with "Ach
Ghalta, Stampede Tyrant Ghalta, Stampede Tyrant strikes me as the kind of Timmy card that overruns casual tables unprepared for a turn 5 or 6 Ghalta accompanied by an Eldrazi but falls apart when prodded with interaction from a prepared table
Its unsurprising that an iconic card like Laboratory Maniac is up there in price despite now being an uncommon
With Gruul Aggro as a strong choice in Historic already, Arni Brokenbrow could possibly see play in that format as well for the same reasons why its good in Standard
He's hanging out with Akroma and Phage, the two characters from the Onslaught story that later merge into Karona, False God