Quote (BreathWeapon @ Dec. 05 2003,07:55)@Toad, I think your being overly harsh on Mystic Remora. Yes, you have to pay mana on your turn, but is it that big of a deal? This card has massive tempo implications vs the opponent that can't be ignored. If you can build a deck around Standstill, you can definately build a deck around the Remora.
Mystic Remora has Cumulative Upkeep, which means an heavy Control deck will be really reluctant to pay for it along lots of turns. When you play Keeper, there is nothing worse than tapping big amounts of mana during your own turn unless you do broken things. Mystic Remora is more an Aggro Control drawing engine, because you plan on winning fast, and thus the drawback is not that annoying. Even after January 1st, the format will still be fast, as Dragon, TPS and Welder MUD will be strong contenders. If you wait until a few turns before you drop Mystic Remora, tempo will hardly be an issue, especially against Dragon, which has a single spell to cast to win the game, or against Welder MUD, because either it or Keeper would already be in Control. So you'd have to cast it in early game, and I can't imagine myself playing a first turn Remora and the upkeep on the second turn, preventing me from achieveing my UU threshold. Standstill is fine because you drop it, and then forget about it. You have no additionnal mana to spend on it each turn.