Muahaha a "Rakdos Rite Knife" target! Yet for the mana cost i say make him kill players to, he is 3 life and thats great casue that is his weakness and thats fair.
Jusk effective at making the opponent not attack you yet not somthing you can remove. Yet i feel you need to make him Shroud not Hexproof to prevent people using "Pariah" on him.
Good Control dragon i still say for the mana make the last one simple, Whenever a non land permanent you don't control becomes tapped gain 1 life. and not only due to effects you control.
Yep she is wonderfull but i go as far as saying make the counters permanent. or she will get hammered.
5. Yi Tian
A Trample land snatcher, i like him think you can use the battalion effect to save some text
6. Ara's Embers.
Instant speed! please make it instant speed its soo bad in sorc. Q.Q
And one more thing ither cut the card discard to 1 or make it as faithless to make it really cool. Draw 2 cards Discard 2 at random and then shot for 5. that really fit it
7. Councuring force
To that mana cost i change it to a enchantment saying: that when it comes into play each creature gains the effect to steal a land on combat damage to players, and then make make it so you keep the lands as long as the enchantment remain. ;D
8. Domination Pressence
Yep Control wonder cards, it works
9. Forest Chorus
Make it 3 mana or even 2 i belive "Parallel Lives" do this just as a permanent enchantment. so this as a bulder card needs to be cheaper, ad worst it makes 2 1/1 at best 1 other token maby a charm knight 2 2/2 then but cost 2 cards. feel the cut in mana is needed.
10. Hollow Phatasem.
I say make it like a grave threat so that the card is like mill 3-5 cards and then it recasts for each card named Hollow Phatasem in your grave.
But all in all Good cards 8/10