The best is Brainstorm since you draw three and then return two, so it's strong with putting back lands, expensive stuff, hiding from discard and reshuffling with fetch lands et all
We are halfway done
Of course, since it has toxic two, each of its attacks will get you that much closer to hitting the corrupted threshold, as well as closing out games by putting on the last few poison counters needed
As for Amulet Titan, I don't consider it to be a Ramp deckit attempts to break a number of fundamental rules, and is better classified under unfair combo
For example, if an attacking creature would deal 8 damage to you and you control two Ancient Adamantoises, you'll choose which of those Ancient Adamantoises will take that damage
The rule book was not particularly dense, and there were things not explained in there