On the one hand, i would greatly like to see the card renamed into something which does not contain something from another game (We had some copyright-issues in the past, and it should be considered that we don't want to have any trouble with lifless laywers that seek upon a small independent card game... although archimonde is just awesome xD)
And on the next point, better use images which are no arts from other games (like invoker is a blood mage for example) because of this...
On the other hand, the card just have too much text for some quite random effects. On the other hand, "turns" is worded "replace any" for amtching with other cards... This clarifies the card way better...
I would change the text from:
Attack: 32
Turns all Holy and Alliance cards into Demonic of the Same rarity lose 1 Stock per enemy Card converted
Highest facility -1
Enemy Highest Facility -1
into:
Attack: 32
Replace any Holy and Alliance cards in game with Demonic of the same rarity Stock: -N
N: #replaced enemy cards
Highest facility -1
Enemy Highest Facility -1
third: Is the facility reduction really needed? It just crushes your enemy tactic far enough, so the facility reduction is almost obsolete, even for both players... The pure power of the attack and the replacement just makes it cope with rares for the cost, so i wouldn't mind removing this effecs and increasing its cost. (On the other hand, it would drastically reduce the card text, which is too much, sometimes its better for a card to do less than to do too much...)
It's not that the main concept is bad (In fact, i really like the idea of replacing holy and alliance cards), but the whole amount of effects makes this card look messy and just overshadows the good concept itself...