Your search for "rush of knowledge 66" revealed the following:
Rush of Knowledge (SCG) from Scourge, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Eric Peterson Card Text:Draw cards equal to the highest converted mana cost among permanents you control.
Rush of Knowledge (Foil) (SCG) from Scourge, available at 401 Games Canada. Rarity: Common Finish: Foil Artist: Eric Peterson Card Text:Draw cards equal to the highest converted mana cost among permanents you control.
Rush of Knowledge (C14) from Commander 2014, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Eric Peterson Card Text:Draw cards equal to the highest converted mana cost among permanents you control.
Rush of Knowledge - SCG Reprint (PLST) from The List, available at 401 Games Canada. Rarity: Common Finish: Normal Artist: Eric Peterson Card Text:Draw cards equal to the highest converted mana cost among permanents you control.
Rush of Knowledge (2XM) from Double Masters, available at 401 Games Canada. Rarity: Uncommon Finish: Normal Artist: Eric Peterson Card Text:Draw cards equal to the highest converted mana cost among permanents you control.
Rush of Knowledge (Foil) (2XM) from Double Masters, available at 401 Games Canada. Rarity: Uncommon Finish: Foil Artist: Eric Peterson Card Text:Draw cards equal to the highest converted mana cost among permanents you control.