Six mana to draw three cards isn't a good rate and you do have to meet the necessary condition to get the cycling cost reduction, but if you do, being able to pay nothing for all of your cycling spells for as long as it is in play is a good thing
Astral Slide A relic of MTGs past, Astral Slide would probably be too powerful for todays Standard formats
Alongside the symbols above, most strong cards also get Alternative Art / parallel versions, the same card and game text with new artwork
But its Artifacts that are the cream of the crop when it comes to historic
Marneus Calgar Marneus Calgar is a very strong commander, allowing you to draw cards whenever a token enters the battlefield
Rather, a second "reflexive" ability triggers when you amass Orcs this way