The basic version of the card is essentially worthless: it's just not a very good card in competitive magic
I can never seem to remember the second a in it, and I always spell it as Armillery. This is a great card for so many decks because it nets you two lands, right now, for any color
then, we use our Molten Rains and Stone Rains to clean up any non-fetch lands our opponent happens to draw, which keeps our opponent as close to zero mana as possible, With Blood Moon, the plan is similar, but we mostly focus on attacking basic lands our opponent happens to draw, which allow our opponent to make the colors of mana they need to cast their spells
Every so often, Magic: The Gathering will mix things up, but this is typically the rules for deck construction at a Prerelease event
Gavony Unhallowed Creature Zombie Whenever another creature you control dies, put a +1/+1 counter on this creature
Hes also a great Bridge target because his mana cost is steep, but the Bridge lets you ignore that