Because the faction that revolves around one card needs a card that makes that one card even better and also helps draw it (and copies of it) sooner…
Seriously though, how soon till we have a deck with Divine Bond, Afterblaze, Lionheart Blessing (nice synergy potential with Afterblaze by the way), Aegis Barrier, and Aerial Rift where you just replace/cycle all the 1 mana spells til you have 2-3 Divine Bonds in your action bar and then pump which ever minion you have up?
In any event, Lionheart Blessing + Afterblaze should be fun. play both, swing, get two cards immediately. Play them on a Azurite Lion and swing twice and you have a 4/7 (minus the damage it took) Celerity minion and 3 cards drawn. Even if it then gets dispelled/removed, you’re already ahead in card advantage.
I was a bit preoccupied 

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