A combination of decent playability and extreme rarity had collectors scrambling to get their hands on this card, driving the value and expense of a single raw copy through the roof, with a single pack-fresh card costing collectors around $350 or more
Anyone who harms it must exile a card at random from their hand, and if it's a land, Rona's controller gets it
The activated ability is rather expensive though, so it plays best in decks that know they have to turn aside a single prominent threat
However, the best Magic players use whichever cards work best in their deck, regardless of rarity
The issues with Astrolabe are threefold: First, snow mana's not really a hurdle in any capacity
Fortunately the trend is far closer to the irrelevant end of the spectrum than the disasterous end