Not only is it in an ideal color identity for birds, it also rewards you with a triggered ability that scales up the more birds you swing with
So you need to sacrifice something on a turn other than when you originally played it to make use of this, hoping to cast something very large
It supported an entire Limited archetype, reinforced the alien horror of the Eldrazi, and quietly taught players that sometimes the scariest mechanics aren't the ones that deal the most damage but the ones that set up for something else to pull the trigger
This kind of ability isnt super flashy, but you need ways to handle cards like Aetherflux Reservoir and Rhystic Study, plus bigger ramp targets
Im hesitant to spend money on things from the two Innistrad sets, because the Double Feature printing just put more copies out there
If you check the Offering Rates in Pocket, the probability of getting one of these cards is 0.040% in the fourth position of the pack