Howlers Heavy Combat tricks are a much safer bet when they cantrip, and that goes doubly so for combat tricks that are also filler creatures
They all have three levels which act as a slow form of modality (and modal cards are fantastic in singleton formats) and some of the individual effects are strong
Nightpack Ambusher is in the range of playable, but the rest isnt
People have talked about this card as a way to deal with Thassas Oracle in higher power tables, but it just doesnt feel like a good answer
Black Bolt is more coveted by collectors than White Flare, as it has fewer playable meta staples, but more cards are likely to be collected by fans and used as display pieces for years to come
After Nissa, Voice of Zendikar pumps them, thats an attack for eighteen damage on turn four