I've been pondering how best to build Ezreal in the new Dominion mode, and it's gotten me wondering: Are Magic Damage procs, like from Wit's End and Madred's / Kitae's Bloodrazor affected by the aggressing champion's spellvamp?
I know they don't get counted as part of the base damage of the attack, i.e., a separate damage number appears, and proc-boosted attacks don't generate more lifesteal than expected, but are they considered for spell vamp at all?
I know, for a time, the Wriggle's Lantern, 500 damage vs. minions proc, triggered lifesteal (which, given that it was 500 bonus damage, was quite noticable) but that has been patched out.