Then you spend three mana, two Phyrexian white so that could be 1 and 4 life or 2 and 2, and then sacrifice two artifacts, to place an indestructible counter here
The long and short of it is that its a 2/1 for G, which is a significant downgrade from Hexdrinker but a big step in allowing green to get away from mana acceleration in Cube and opening up more space for green as an aggressive color
Because of this, its a popular card, and one that you need a lot of copies of, leading to a high price
However, they've fallen by the wayside as the format has expanded and strategies that offer even more value, like evoking the Modern Horizons 2 Elementals, have emerged
As long as Snow Villiers is on the battlefield (and still a creature), that ability will count Snow Villiers itself
While you might manage to kill one dragon, killing the second one was a feat often only achievable with Baneslayer Angel at that time