oath: creatures and impulse vs thirst

Creatures!
akroma/razia vs tyrant...not going to lie... don't like tyrant, vigilance is to good to give up for a bounce ability, oath as a less effective draw engine, I tend to empty my hand pretty fast aside form force/misd. Not much spell bounce ammunition... a good fish, grunts and all, can compete clock easily with tyrant. The real question is BOGARDEN HELLKITE(can it work!?)!... yes I know its ridiculous...I started a build using it as a joke...but it had a lot of unforeseen benefits(the best being the "are you serious" when the opponent sees it drop on the other side)... like burning off welders, not effected by the orb of dreams people still boarded in for some reason and easer to hard cast(with out some lucky mox action razia requires all 4 orchard and your taking at least 3 next turn)...problem is the 15 opposed to 18... especialy targeting a welder/metal/ anything toughness 5 or less, its been amazing clearing out a fish that has an early advantage in clock. plus hard casting to burn off mage and drop oath for the second is sweet... need to find a way to give it hast though... 10 and then 15 with haste on both of them is an excuse to target off tons of annoying crap...even if you only get haste on of them that’s still 10 and 10 for a full 20 if there's been no self induced-2...I have yet to test in the mirror, but there is the potential of them dropping an oath being a head on orchards... you hard cast the hellkite and your down 5 tokens form where you where....what makes this ability extra funny is FLASH!
i am are that getting the swing number the same as akroma/razia will take up an extra slot or two... but the flexibility in the targeted removal has been pretty amazing, warrens doesn't seem to like the loss of 10 tokens... as well as the reasons listed above...
anywho, that’s my two scence on the hellkite being hilariously awesome...

Impulse...I’ve had people see a thirst being played and blatantly ask why that instead of impulse... I fail to see much benefit to impulse. it gets you a card deeper in... And you can not draw akroma if it's in the 4...but it provides no REAL card advantage, ditch 1 card, get 1 card. thirst with rod/moxen/chalice gains you a card late game.... plus provides an out on shuffling in akroma razia god forbid u actually draw them... brainstorm fetch, it's just not enough...chalice for 1 is one of the stronger plays you can make. Plus if you recline an activation of oath... your opponent will not let brainstorm resolve... so I guess my question is... why impulse?

So yes, comments answers. I’m generally more concerned with the hellkite thing, but I am curious as to why the impulse question.

Your writing skills need to seriously improve before posting further - this is atrocious. In particular, capitals where appropriate and correct use of the ellipsis (...) will make your posts much more pleasant to read.
-Godder