When they say holy shit, I think this is the right reaction to this incoming Hall of legends card, like what is this ability combination doing right here, first of all as a magic cards fan, this is too much and enticing to just look and pass. Analyzing this card and get to know why they will be so useful on a long run, the Warborn Shaman really had a good dual element to fit in even though the mana card is quite discouraging but with that abilities combination, the time won't want to make it an easy to use cards especially during low mana battle, you have to give it a deep thought and be willing to sacrifice for it if you want to use it in low mana battle (that is if it fit in the rules). As a water /death cards, it is a 10 for me since I use the two element well enough, having a void armor with a heal ability is the right deal but now with the ambush (3 magic strength) and poison, what more can a user ask for, I'm not that use to Impede ability but getting to remove -1 speed every time you attack a card successfully isn't a bad idea especially if you are using more swift or speed based ability.