Zendikar is quite frankly the hottest set that Wizards has put out since the early days of Magic.Zendikar is a world of adventure and reward for those with the courage to brave its perils
Hakbal is also a source of ramp, considering every time he attacks, you can play out the lands you've expanded into
Its a piece with a very natural progression to it, guiding the viewers eyes across the canvas in a way that tells a short but effective mini-narrative
As such it cannot be used willy nilly against any agro deck as there is a good chance it is more problematic to face than whatever you got from them
It also plays exceptionally well with double-striking Warriors, and it even counts itself if you can somehow slip this 1/3 past an opponent's blockers
The best strategy for Sephiroth is an aggressive Aristocrat game plan, that is, one that focuses on creating and sacrificing multiple creatures to transform him faster and get his emblem