Battletag: Timetosaygg#2691 Region: EU Trade only?: Yes, you go first
Only buffed it will become a threat. Then you can remove it with Shadow Word: Death or Time Rip. You can steal it with Shadow Madness or use Penance if it has low healthpoints and you can trade it with you own minions. Never had any problems to be honest. :)
You actually can replace a copy of Shadow Word: Death but remember that you remove a possible spell for Sethekk Veilweaver. Some players like to add a Shadow Word: Pain instead. If you want to add another minion I would recommend one out of the card replacements section.
I's an important card. Using it's effect gives you a lot of tempo and enables combos which wouldn't be possible otherwise. Furthermore it's a solid minion with cood stats for (4) mana and a dragon for Breath of the Infinite.
I wouldn't recommend him in this deck. Of course you got many spells in the deck but don't forget that the targets are random when used by Archmage Vargoth. You played him in resurrect priest because he was able to give you a bigger board by casting a free Mass Resurrection.
Catrina Muerte isn't a good choice because you want her to summon powerful minions. You play a lot of minions which aren't worth summoning. You sometimes get her out of the hero power and play her though. Which card you mean with arch mage?
I never said i invented this deck or that it is new. Galakrond Priest is kinda defined for the moment with a few cards changing between the lists. My intention was to give some help understanding the deck and helping players getting in to it.