quick review :
In a general way, be very careful with rules that say "when ... comes into play ... target ..." , because currently there is no way in wagic to code these rules, as you'll have to select the target BEFORE your card comes into play, which is incorrect.
Aftershock : damage 3 and lose 3 life is not exactly the same, as damages can be prevented
Armor sliver: its ability probably won't work (needs testing)
Blood Frenzy : I think the target creature won't be destroyed at end of turn
Cloudchaser Eagle : technically it's wrong, because you have to choose the target enchantment before putting the card into play, which is not what the rule says
Commander Greven il-Vec : bury and sacrifice are not exactly the same thing, although this works. Also, you have to choose the sacrificed creature before the card comes into play,which is not what the rules say
Dismiss : Does it work to have an Alias AND an auto ability? I think not, but I'll try to implement it because it is a nice idea
Flowstone Salamander : will not exactly work as expected
Gravedigger : will have to choose target before card comes into play
Knight of Dawn : missing "green" in "protection from green"
Natural Spring: cannot target opponent
Perish: replace "bury" with "destroy"
Puppet Strings: I think this is a bit incorrect, but very difficult to explain. I think you can choose to tap or untap when the effect resolves, rather than when you play it... a bit difficult...
Safeguard: the way you coded that is soooo wrong
Wind Drake: abilities=flying repeated twice
These are just minor points . Some of the cards mentioned above wouldn't make it into an "official" release (some of them cannot be correctly solved without changes in the code), but that's, what, 5 cards in a 130 cards set? So good job, I'll probably add it to next release!
Okay, maybe I should correct the target in the autoline to: target(creature[attacking;blocking]).... 
