Sleeper:

And about Wall of reflection, it sux against holy. Holy is about board control and making combos or big creatures, if you manage to kill first wall, not dying in process, you got very big board advantage while your opponent has empty spot in place of wall. Opponent lost 4 illusion mana - gj

Wall of reflection is for ending the game quickly.  If your opponent plays it early then either he's planning to kill you soon or he's made a mistake.  Wall of reflection isn't really any less effective against holy than most other mages because once it's out in play, holy only has one card that's going to save it from an armageddon/stonerain/acidrain: Divine intervention and even 10 life could easily not be enough to save you.

mmm, holy can boost himself up faster, so he can pull out combos faster too;/ Like Dragon/Chainlightning/Tornado/Wrathofgod/Divine justice. I dont think illusion can do that as fast. Especially considering that illusion dont have wrath or divine justice ^_^

One suggestion to balance the Wall of Illusion would be if it only reflected damage actually inflicted by the opponent's cards. That way it simply doesn't get abused as Yellow Cake by anyone lucky enough to score Armageddon or Stone Rain.

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Another card that could use some balance point as well is the Phoenix. Now I understand this is only a beta so things could change, but as is with 10 Fire in your pool they are even immune to creature control. Now theoretically direct damage cards would be a way to get around them, but if the player has lucked out with Healing spells then the end game will eventually lean in favor towards whoever has the most Phoenix out as they can simply raise their life points out of the range of your biggest direct damage spells and if they actually play Armageddon or Stone Rain with a full flight of Phoenix out they simply deserve to lose.

My suggestion would be if the Phoenix subtracted a certain amount of Fire mana as a regeneration cost (somewhere from 3-5) instead of the 10 minimum, that way it would limit the abusability and curtail the inevitable Armageddon buildup that a whole squadron of Phoenix would involve.

I think those are two very good suggestions for some problematic cards. 

I have never found Phoenix to be much of a problem.  Regeneration costing 3-5 fire would be too much of a liability.  If your opponent has time to build more than 2 Phoeni than you deserve to lose or got horrible spells, IMO.  Also, Phoenix rebirth comes into play after mana is subtracted for casting Armageddon.  If your opponent has had time to build up 21 Fire AND 2 Phoeni then you REALLY deserve to lose!  haha

travcm:

I have never found Phoenix to be much of a problem.  Regeneration costing 3-5 fire would be too much of a liability.

 I think 1-2 fire would very much be justified, it would make the Phoenix less of a "fire and forget" card by keeping players more on their toes that they maintain a high fire value.

travcm:

Also, Phoenix rebirth comes into play after mana is subtracted for casting Armageddon.

 Which makes about as much sense as a fish that drowns...