Given the trend of some of the other cards, I think it might be safe to guess we’ll see a card like this
Early Birth
Magmar
Spell
0 mana
Your next minion with Rebirth costs (1) and spawns as an Egg.
Anyone else have any other ideas they think might be showing up?
There is no way for you to know the exact future. That being said, I do think they may work on rebirth synergy, what with the change and all.
That idea is very cool, but honestly seems way to strong. for turn one as player one, you could use that, drop a Dark Nemesis, use it again, Pandora. If they can’t answer both eggs, they effectively lose.
edit: didn’t see with rebirth, but you could do the same with vet silithar.
I’m just mad there hasn’t been a single magmar reveal yet.
The next minion you summon this turn costs 2 less and takes 2 damage.
You could play a turn 1 Silithar Elder and having 2 Eggs on board after the turn.
While I really wish to get some Rebirth synergy I think it’s save to guess that this card won’t happen.
The name of the addon should be Denying of Magmar. 
Just to jump in, you’d still only end up with one egg. Elder doesn’t drop any eggs when it’s in its own egg form.
I should read better. “Spawns AS an egg” - not “spawns an egg”.
My fault.
5 Mana Silithar Elder with Rush
That is all.
What, no battle pet synergy? 
Given the pending change to eggs that would be kinda crazy unless the silithars are nerfed a lot.
I don’t think so, i’d rather say it has some lore reasons, since the Shim’zar jungle is Magmar Territory, and also a Magmar Aspect is living there.
inb4 a 9-drop-minion called Paarnax the whatever.
Paarnax the destroyer!
9 Mana 8/15
Whenever this minion destroys an enemy minion, destroy another enemy minion. If there are no more enemy minions, enemy general takes 5 damage.
Paarnax the Patient
9 Mana 2/25
Whenever this Minion takes damage, add that much to its Attack stat.
Transform a random enemy in a random battle pet that has dying wish: draw a random spell of a random faction…maybe?
Not enough RNG, it should be “Transform a random minion from either player’s hand or deck into a random battle pet that has Dying Wish: Transform into a random minion or spell from another random faction.”
The ultimate Zen’Rui catch.
4 mana spell: Give all friendly minions Rebirth