Like most era-closing chase cards, it has been steadier than hype-driven modern pulls, with graded copies showing the clearest appreciation
But another important aspect is its second ability
The combination of card draw and pressure is quite valuable, because the draw advantage gives you the fuel to end the game before your opponents find a way to get around it or to generate their own pressure
Arahbo's hidden strength is since you're only presenting one threat at a time, you're far less likely to overextend and play out your hand onto the board, meaning creature board wipes like Wrath of God are less powerful against you since you're often trading 1 for 1
This is the best way to know for sure how rare your card is
Thanks to this, it should be no surprise that this card has been in incredibly high demand since Aetherdrift was released