Casting a spell as an effect of its rebound ability follows the rules for paying alternative costs in rules 601.2b and 601.2f–h.
July 13, 2013 · Magic 2014
rule 702.88b not present in this release
September 30, 2011 · Innistrad
Damage dealt to a player by a source with infect doesn't cause that player to lose life. Rather, it causes the player to get that many poison counters. See rule 119.3.
June 17, 2011 · Commander 2011
Damage dealt to a player by a source with infect doesn’t cause that player to lose life.
February 4, 2011 · Mirrodin Besieged
If a creature has multiple instances of battle cry, each triggers separately.