How did I not know there was a Hearthstone Design section?

I have been working with my daughters on a Hearthstone set and I was hoping to get some more in depth feedback on some of the cards. The set has a "Mana Crystals" matter theme.

Chromie
Legendary Minion ─ Neutral
Every 30 seconds of your opponents turn Chromie gets +1/+1.
3/4
Everyone loves ropers. Just not as much as Chromie.

On summons: "Time is shorter than you think."
On attack: "Your time has come!"
On death: "Back to the future....."

Take that ropers and bots! Every 30 seconds she gets +1/+1. If your opponent finishes their turn at 25 seconds, doesn't trigger.

Kael'thas Sunstrider
Legendary Minion ─ Neutral
Battlecry: You gain 10 new Mana Crystals.
6/12
"What's better than 10 Mana Crystals? 20!"

On summons: "I shall give you a taste of TRUE power."
On attack: "My people must be avenged."
On death: "Nothing of my homeland remains, but ash and sorrow."

Yup, a whole new row of Mana Crystals (inactive, activating one at a time.) Specifically given 6 power to save him from BGH.

Rogue Card:

Ghost Blades
Spell ─ Common
Your weapon gains "Deathratte: Re-equip this weapon"

This would include any boosts such as Oil or Poison.

Mage Legendary:

We already have one for fireballs and one for Arcane Missiles, so I figured it was Frostbolts time.

"Iceman" Jones
Legendary Minion ─ Mage
Your Hero Power is Frostbolt.
4/5

I have a ton more but I wanted to gauge interest first. Now time to peruse the gallery.

There is already a YMTC thread.

So there is. Not sure how to delete this one?