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Exeter: to analyze your points
"Ivory Tower is not good if your hand is getting ripped apart by discard."
well nothing is good when your hand is being ripped apart by discard
Renewed Faith, while not *good* in the face of heavy discard, allows you to cycle into something better. Ivory Tower does not.
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"Ivory Tower is not good if you have to constantly expend cards to deal with an opponent's threats."
By that same argument tower is good, since it does not waste cards, lands, and mana to gain life.
No good aggro deck is going to let you sit on 7 cards. Try it and see how much you lose. (Note, if you have Moat and Abyss out, this doesn't apply, but you've likely won anyway, so it's not a point in favor of Ivory Tower.)
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"Ivory Tower is no good if it gets eaten by Sligh's Mox Monkey."
correct, neither are moxen, zorb, sol-ring, etc. This is not really a valid argument either.
Yes it is. With a Zorb, you can drop it and sac 3 lands immediately and gain 6 life (or whatever numbers you want). With a Tower, you have to drop it early so that Mr. Mox Monkey can snack on it.
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"Ivory Tower doesn't cycle in a control matchup."
Again not cycling is not a good excuse. Abyss does not cycle. STP and edict do not cycle against combo.
No, the Abyss does not cycle, but it does a lot more than gain life. Renewed Faith, however, *does* cycle, which makes the cycling a relevant point. Don't you get that?
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try it out first. don't just discount it.
I have.
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Often by the time keeper stabilizes it is at a deffinate life disadvantage. Tower is life gain for 1 mana that you can play proactively before you need life.
Who cares if you're at a life disadvantage. Every life point above the first is simply a resource to be used. If you end the game at > 1 life, that just means you didn't use all your resources.
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But then again I have other "rogue" ideas about keeper.
I think keeper needs to run moat maindeck again. Abyss and moat are the dynamic duo. Stop their rush and eat it up. Also abyss does not stop artifact fattness. moat does. and keeper can easily wish for ebony charm to get rid of wonder.
This I can agree with. I like Moat, but Moat is not the subject of discussion.
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tutorable instants: one shot, require 2 cards. can be countered. take up mana. take up slots in the sideboard.
Yes, it's one-shot. So is Zuran Orb, often. It doesn't require two cards if you don't tutor for it (and often you don't want to, you have better things to tutor for), and I think a non-blue deck is going to have a hard time casting a counterspell on Renewed Faith. Sure, it takes up mana, but so does Ivory Tower, in a subtler way.
Say, for example, you draw Ivory Tower, Brainstorm, FoW, Land x3 and random blue card. Now, You'd probably like to Brainstorm on turn 1, so, no Ivory Tower. Similarly, you can easily draw stuff that would probably pre-empt Ivory Tower for another turn or so, which means no life gain until at least turn 3. By then, you are mostly dead if facing Sligh and not super lucky.
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zuran orb: suicidal to run in paragon because you have less land with the fetchlands. that land you eat essentially costs you two lands and the chance of drawing into more mana if you need it is lessened. destroying your own fragile mana base to survive lessens the chance you will actually have the mana to recover when you need it.
I don't like Zuran Orb as much as Renewed Faith, because of the cycling, but I will just mention that you can sac fetchlands just as well as regular lands.