Two of the best mechanics lead to some pretty lovely cards from the era
The issue is that without that support, its too weak
As with all 1st Edition cards, the initial print run was strictly limited, making high-grade copies genuinely scarce
Powerful card that has some nice ramp attached
You can see an overview here: 90% (4th card), 60% (5th card) 5% (4th card), 20% (5th card) 1.666% (4th card), 6.664% (5th card) 2.572% (4th card), 10.288% (5th card) 0.5% (4th card), 2% (5th card) 0.222% (4th card), 0.888% (5th card) 0.04% (4th card), 0.16% (5th card) So, if you open 1,000 boosters, there should be one to two cards of the crown rarity
In the most recent StarCityGames Open, a W/U Control list by Eric Rill placed second that included Nyx-Fleece Ram in the sideboard: W/U Control