A creature with horsemanship can’t be blocked by creatures without horsemanship. A creature with horsemanship can block a creature with or without horsemanship. (See rule 509, “Declare Blockers Step.”)
July 13, 2013 · Magic 2014
rule 702.31b not present in this release
September 30, 2011 · Innistrad
The phrase "Kicker [cost 1] and/or [cost 2]" means the same thing as "Kicker [cost 1], kicker [cost 2]."
June 17, 2011 · Commander 2011
The phrase “Kicker [cost 1] and/or [cost 2]” means the same thing as “Kicker [cost 1],