Hmmm… yeah, not sure I can really justify Vlad.
I have found a very good use for Obakan at least. He is my purple team’s designated kamikaze riposter.
Obakan: “Alright man, I’m ready for war!!! What do you want me to do?”
Me: “Go in and try to take out their yellow guy.”
Obakan: “Cool! Yeah, I think I can do that! Then what next?”
Me: “Oh, nothing next. After that you can just stand there and look pretty while awaiting further instructions.”
Obakan: “Alright! I think I can handle tha–”
Ouch.
Well, that’s the end of Obi. R.I.P. my friend. Congrats on taking that sniper down with you, though! 
Actually plays well into my colored strike strategies.
Red team - shock and awe, burn them with fire!!!
Blue team - disrupt and weaken the enemy!
Green team - try to stay alive long enough to take the opponents out one by one!
Yellow team - steal their mana! Blind them! Throw some tiles! Rinse and repeat!
And now, for something completely different:
Purple team strategy - mostly just stand there trying to keep yourself alive while your opponent successfully manages to kill themselves 