Compared to cards like Batariel Bloodhorn Promise of Life Unity Bloodtirst Frenetic Assault+Infect and many others which are necessary for BG LvL 8 Skydancer is actually kind of weak. A combo that i really like is FireForce(B)+Unity(G)+Bloodthirst it gives your army 40% damage resistance + slow passive HP regeneration + 40% damage bonus + 200 hp regeneration for 4 seconds for every 400 damage units deal.
With this combo Batariel basically has 7000hp and 7840 attack + your army shares its hp and if thats not enough you cast Green Peace which doesnt even require ground presence to disable powerful enemies.
At LvL 6 this combo would make every match boring and its 100 times more powerful than Skydancer but for some LvL 8 maps you just need a deck like this to win.
If certain cards make "easy mode" too easy for you simply dont use them.