User blog comment:Willbachbakal/(CB1) Hannibal, the Dread Vanguard/@comment-533780-20150326154812/@comment-1330314-20150326170107

War Engine does not protect Hannibal from damage, it only converts some incoming damage to his eventual explosion, which happens after a 3-second countdown (he has to restart this all over again after exploding). Strife also is his passive, and I designed her to fulfill the challenge by having her be the only buff out there that can be used by the wielder's opponents, which not only restricts its use for Hannibal and his allies, thereby satisfying the requirements, but is also meant to make this quirk a major point of strategy for him and his team (the deeper you take Strife into the enemy lines, the likelier she is to be hijacked).

While swapping out a champion's ability set does have its downsides, I think those are justified, since Strife herself is a massive buff: her own kit is meant to be simple to use and extremely powerful in specific situations, most of them not directly involving combat, so ideally switching out from your own kit to Strife's and back should feel fluid and natural. The idea of a team-wide cavalry charge is fantastic, but that might be better-suited to a different kit, since Hannibal is meant to offer great persistent utility at the cost of sub-par initiation.