Unbeknownst to most, Zephrys the Great has an evil twin known as Zephrys the Not So Great.
Instead of giving you a card you wish for, he gives you the worst possible card for your current scenario.
For Example, you’ve got a nice fat Mal’Ganis on board on turn 5 and your opponent has nothing. You play Zephrys the Not So Great.
Your (3) mana choices are:
Treachery - Light’s Champion - Unleash the Hounds
What does your Zephrys the Not So Great do for you?
If opponent deck likely goes wide. I chose hounds.
But arent we win already?
I mean, we got malganis. They got no hand. Meaning, their cards already on the board. If they got no board and hand. We win. Thx for coming, zeph oh-the-not-so great.
most of the time draws me a card at the start of the turn ba-dum-tish
I find the not so great more likely in this kind of scenario.
You gotta give him a lot to work with.
Treachery? That’s an expansion card. Maybe you got confused and he tried giving you Windfury.
Windfury would be beneficial.
I’m theorizing what the opposite of beneficial would be.
Treachery is not a card that can be offered. Lie more.
So this isn’t a testimonial? 
Lol, going by your example, he’d offer me the following…
1.) Snowfury Giant (Unplayable minion)
2.) Cataclysm (kill my guy, discard my hand)
3.) Junkbot (Hammers home “not so great title”)
Or my personal favorite…
You’re at 5 life, an you play Zephrys the Not so Great an get the following.
1.) Bloodclaw (So you die)
2.) Pitlord (Also would die)
3.) Healing Touch (if you pick this option the game disconnects you an will be unable to “reconnect”) lol.
your concede is my suggest
You might want to work on your reading skill. The OP isn’t talking about Zephyrs the Great but rather a hypothetical Zephyrs the Not So Great. This isn’t a testimonial it is a fluff post.
Zephrys the not-so Great awards my opponent lethal instead of me 
Hi, i have similar problem. In turn 4 i had 4 mana. I played Zephrys, so 2 mana left. On my board was only Zeprhrys, on op. (mage) board was 4 creatures like 2/1, 2/2, 4/3 and 2/3 and secret.
Why i cant get “DEFILE”??? It will be PERFECT. But i got Arcane Explosion, Eviserate and SI: 7 Infiltrator…ehm…what?
Zephrys only offers Basic/Classic cards
Necro a fluff thread to observe that Zeph doesn’t offer cards from expansions. Epic level of something hehe.
In response to the previous thread, the ZTNSG would offer you a SW:Death obviously, to let you kill you Mal’Ganis. Or maybe a Naturalize because you needed draw? (Was Nat ever Classic??)