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Message: <blockquote data-quote="MarkB" data-source="post: 2993405" data-attributes="member: 40176">Something that occurred to me whilst reading the thread on countering spiderwalking / fell-flying warlocks:Although warlocks' invocations are spell-like abilities, they follow most of the normal rules for spells. And when you cast two instances of the same non-instantaneous spell upon a subject, their effects generally overlap rather than stacking, and the second casting will remain in effect when the first runs out. And, importantly, each of them requires a separate caster level check when the creature is the subject of a dispel magic attempt.So, how does that relate to warlock invocations? I can't find anything in the warlock class description or the Invocations header text which indicates that multiple castings of the same invocation would not overlap, nor does the description of spell-like abilities seem to preclude a creature subjecting itself to multiple instances of the same at-will ability.As a for-instance, could a 6th level warlock spend five minutes at the start of the day doing nothing except repeatedly invoking fell flight, building up a total of fifty overlapping castings and thus making him practically immune to being brought down by anything less than a high-level casting of greater dispel magic?Yes, it's very cheesy, and I'd houserule it instantly if a player tried it - but is it actually illegal by the rules?</blockquote>