So basically all this is just asking for the Warlock wearing the exotic chest armor Heart of the Praxic Fire to have his/her wave emote to be replaced with a special Praise the Sun emote from Dark Souls. Since, you know, it's already a a reference to the game and it would be pretty neat to do when I finally get it.
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how about getting rank 4 with eris gives you the emote since she already does this