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We had this situation come in a game last night, and I wanted to make sure that we played it correctly and that I understood the rules.
Player A had an Eiganjo Free-Riders in play. During this turn, he cast an Icatian Javelineers. He then ended his turn. During the upkeep of his next turn, he targeted the Javelineers with the Free-Riders' ability and then responded by tapping the Javelineers to use their ability.
By my understanding, the Javelineers ability would resolve first and he'd get to do a point of damage. Then the Free-Riders' ability would resolve, returning the Javelineers to his hand, and allowing him to cast them again. That seemed to be within the rules.
However, I wasn't sure when the Javelineers' summoning sickness wore off. Does it wear off in time for him to use this ability before they get returned to his hand by the Free-Riders?