So today I've created this deck to complete a 5 win mage quest and was suprised I didn't lose a single game.
I started from rank 9 and went to rank 4 with 100% WR.
I've no proof (played on my phone) so if you believe it is up to you.
The deck is nothing special, and likely I've been pretty lucky.
Just wanted to share this with you guys because it's a cheap and very effective deck.
I won't write a whole guide, however I will reply to any question asked related to the deck.
EDIT: I just played another 5 games with this deck, and again ALL wins, which turns the score up from 16-0 to 21-0! Currently rank 3. I'll continue playing this deck later and will make another update when i hit my first lose.
EDIT2: I continued to play, I won 1 and then lost 1. Which turns the score up from 21-0 to 22-0, and with the lose that followed, this will be the final score.
I lost vs a kazakus mage that started to heal up, up from 3 health. I made screenshots of it. It's not much "proof" but it's all the content I have to share.