What Must Be Done isnt quite Farewell, but it answers a lot of problems
You might be wondering, how in the world did they take one of the most powerful green cards of all-time, move it to blue, and somehow knock a mana off while also giving it flash
2x Nonfoil Showcase Common/Uncommon or Borderless Uncommon
1 Arcum's Astrolabe It's hard to talk about the most powerful snow cards without talking about the only snow card that's not just banned, but banned in multiple formats (Modern, Legacy, and Pauper)
15 despite an average market price of around $700
I hope Wizards prints a similar card again at some point because this is probably the #1 Reserved List card Id most like to see reprinted simply because of how much fun it is to cast