if siphon is destroyed on turn 3 they have probably invested more actions and mana to get rid of it
Depends... Examples :
An opposing FM can just double-move in the Syphon's zone on R2 and QC Bear Strength.
On R3 QC Galvitar and swing 10 ethereal at it for a likely kill.
So at that point it has cost him just 4 mana and a full attack but the Bear Strength and Galvitar are not wasted actions nor mana imo.
A Paladin can basically do the same thing using his Sword of Radiance though it will likely take him one more round.
The Priest's basic attack has the Etherial trait. With A Bear Strength the Syphon should not last beyond round 4.
Light of Dawn also seems like a nice counter option for all Holy Mages.
The Wizard needs only put on his Hawkeye and Arcane Zap a couple of times to remove it.
Other mages may have a tougher time taking out the Syphon but I still would advice caution.
I can only speak for myself in this case but most of my books contain a [mwcard=MWSTX1CKE02] Divine Might[/mwcard] to deal with potential Incorporeal issues if I don't have an in-school answer to it.
mordoks is primarly swarm tech and it wont be cast but if i do psi-orb will pay for the upkeep on the thoughtspores.
I understand, but it's also another 15 mana that you have to pay upfront.
Your opponent can pay the upkeep of a swarm of 5 creatures for 3 rounds with that amount and still break even manawise.
i never build a book without purge (except warlord) because i have lost too many games due too not having it.
If it works for you, then by all means use it.
For me, it's in none of my current books anymore as I think that any book that has a reason to fear Purge will be prepared for it. Nullify/Enchantment Transfusion/Wardstone. Defensively, Remove Curse will usually do the trick just as well for far less sbp's.
I would love to see the book in action though.
Have you used it in the tournament already ? ( recorded ? )