All ten of the fetch lands were the highlight, but also stuff like the allied-colour bond lands (the enemy-colour ones wouldn't be released until Commander Legends later that year), Wasteland, Strip Mine, and Valakut the Molten Pinnacle
You need reference to paint a horse, a shockingly difficult animal, you need to understand light sources, shadow, and composition to make the simple task believable
I might only have a few of them on the battlefield, a mix of card draw engines, sacrifice outlets or my commander, usually none of those want to be on the receiving end of a mandatory block
They are not very common because they require more skill to produce
Its flash and flying defense make it tricky to deal with, and the untap ability has fun synergies with mana dorks or creatures with tap abilities